20796821280

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{787}}^1\times {\mathrm{2039}}^1$

素因数の和:2853

約数の個数: 240

約数和(自身を含む): 73524749760

約数和(自身を除く): 52727928480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 787, 810, 864, 1080, 1296, 1440, 1574, 1620, 2039, 2160, 2361, 2592, 3148, 3240, 3935, 4078, 4320, 4722, 6117, 6296, 6480, 7083, 7870, 8156, 9444, 10195, 11805, 12234, 12592, 12960, 14166, 15740, 16312, 18351, 18888, 20390, 21249, 23610, 24468, 25184, 28332, 30585, 31480, 32624, 35415, 36702, 37776, 40780, 42498, 47220, 48936, 55053, 56664, 61170, 62960, 63747, 65248, 70830, 73404, 75552, 81560, 84996, 91755, 94440, 97872, 106245, 110106, 113328, 122340, 125920, 127494, 141660, 146808, 163120, 165159, 169992, 183510, 188880, 195744, 212490, 220212, 226656, 244680, 254988, 275265, 283320, 293616, 318735, 326240, 330318, 339984, 367020, 377760, 424980, 440424, 489360, 509976, 550530, 566640, 587232, 637470, 660636, 679968, 734040, 825795, 849960, 880848, 978720, 1019952, 1101060, 1133280, 1274940, 1321272, 1468080, 1604693, 1651590, 1699920, 1761696, 2039904, 2202120, 2549880, 2642544, 2936160, 3209386, 3303180, 3399840, 4404240, 4814079, 5099760, 5285088, 6418772, 6606360, 8023465, 8808480, 9628158, 10199520, 12837544, 13212720, 14442237, 16046930, 19256316, 24070395, 25675088, 26425440, 28884474, 32093860, 38512632, 43326711, 48140790, 51350176, 57768948, 64187720, 72211185, 77025264, 86653422, 96281580, 115537896, 128375440, 129980133, 144422370, 154050528, 173306844, 192563160, 216633555, 231075792, 256750880, 259960266, 288844740, 346613688, 385126320, 433267110, 462151584, 519920532, 577689480, 649900665, 693227376, 770252640, 866534220, 1039841064, 1155378960, 1299801330, 1386454752, 1733068440, 2079682128, 2310757920, 2599602660, 3466136880, 4159364256, 5199205320, 6932273760, 10398410640, 20796821280]

約数ペア:

[(1, 20796821280), (2, 10398410640), (3, 6932273760), (4, 5199205320), (5, 4159364256), (6, 3466136880), (8, 2599602660), (9, 2310757920), (10, 2079682128), (12, 1733068440), (15, 1386454752), (16, 1299801330), (18, 1155378960), (20, 1039841064), (24, 866534220), (27, 770252640), (30, 693227376), (32, 649900665), (36, 577689480), (40, 519920532), (45, 462151584), (48, 433267110), (54, 385126320), (60, 346613688), (72, 288844740), (80, 259960266), (81, 256750880), (90, 231075792), (96, 216633555), (108, 192563160), (120, 173306844), (135, 154050528), (144, 144422370), (160, 129980133), (162, 128375440), (180, 115537896), (216, 96281580), (240, 86653422), (270, 77025264), (288, 72211185), (324, 64187720), (360, 57768948), (405, 51350176), (432, 48140790), (480, 43326711), (540, 38512632), (648, 32093860), (720, 28884474), (787, 26425440), (810, 25675088), (864, 24070395), (1080, 19256316), (1296, 16046930), (1440, 14442237), (1574, 13212720), (1620, 12837544), (2039, 10199520), (2160, 9628158), (2361, 8808480), (2592, 8023465), (3148, 6606360), (3240, 6418772), (3935, 5285088), (4078, 5099760), (4320, 4814079), (4722, 4404240), (6117, 3399840), (6296, 3303180), (6480, 3209386), (7083, 2936160), (7870, 2642544), (8156, 2549880), (9444, 2202120), (10195, 2039904), (11805, 1761696), (12234, 1699920), (12592, 1651590), (12960, 1604693), (14166, 1468080), (15740, 1321272), (16312, 1274940), (18351, 1133280), (18888, 1101060), (20390, 1019952), (21249, 978720), (23610, 880848), (24468, 849960), (25184, 825795), (28332, 734040), (30585, 679968), (31480, 660636), (32624, 637470), (35415, 587232), (36702, 566640), (37776, 550530), (40780, 509976), (42498, 489360), (47220, 440424), (48936, 424980), (55053, 377760), (56664, 367020), (61170, 339984), (62960, 330318), (63747, 326240), (65248, 318735), (70830, 293616), (73404, 283320), (75552, 275265), (81560, 254988), (84996, 244680), (91755, 226656), (94440, 220212), (97872, 212490), (106245, 195744), (110106, 188880), (113328, 183510), (122340, 169992), (125920, 165159), (127494, 163120), (141660, 146808)]