20581560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:115

約数の個数: 256

約数和(自身を含む): 77760000

約数和(自身を除く): 57178440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 19, 20, 24, 27, 30, 34, 36, 38, 40, 45, 51, 54, 57, 59, 60, 68, 72, 76, 85, 90, 95, 102, 108, 114, 118, 120, 135, 136, 152, 153, 170, 171, 177, 180, 190, 204, 216, 228, 236, 255, 270, 285, 295, 306, 323, 340, 342, 354, 360, 380, 408, 456, 459, 472, 510, 513, 531, 540, 570, 590, 612, 646, 680, 684, 708, 760, 765, 855, 885, 918, 969, 1003, 1020, 1026, 1062, 1080, 1121, 1140, 1180, 1224, 1292, 1368, 1416, 1530, 1593, 1615, 1710, 1770, 1836, 1938, 2006, 2040, 2052, 2124, 2242, 2280, 2295, 2360, 2565, 2584, 2655, 2907, 3009, 3060, 3186, 3230, 3363, 3420, 3540, 3672, 3876, 4012, 4104, 4248, 4484, 4590, 4845, 5015, 5130, 5310, 5605, 5814, 6018, 6120, 6372, 6460, 6726, 6840, 7080, 7752, 7965, 8024, 8721, 8968, 9027, 9180, 9690, 10030, 10089, 10260, 10620, 11210, 11628, 12036, 12744, 12920, 13452, 14535, 15045, 15930, 16815, 17442, 18054, 18360, 19057, 19380, 20060, 20178, 20520, 21240, 22420, 23256, 24072, 26904, 27081, 29070, 30090, 30267, 31860, 33630, 34884, 36108, 38114, 38760, 40120, 40356, 43605, 44840, 45135, 50445, 54162, 57171, 58140, 60180, 60534, 63720, 67260, 69768, 72216, 76228, 80712, 87210, 90270, 95285, 100890, 108324, 114342, 116280, 120360, 121068, 134520, 135405, 151335, 152456, 171513, 174420, 180540, 190570, 201780, 216648, 228684, 242136, 270810, 285855, 302670, 343026, 348840, 361080, 381140, 403560, 457368, 514539, 541620, 571710, 605340, 686052, 762280, 857565, 1029078, 1083240, 1143420, 1210680, 1372104, 1715130, 2058156, 2286840, 2572695, 3430260, 4116312, 5145390, 6860520, 10290780, 20581560]

約数ペア:

[(1, 20581560), (2, 10290780), (3, 6860520), (4, 5145390), (5, 4116312), (6, 3430260), (8, 2572695), (9, 2286840), (10, 2058156), (12, 1715130), (15, 1372104), (17, 1210680), (18, 1143420), (19, 1083240), (20, 1029078), (24, 857565), (27, 762280), (30, 686052), (34, 605340), (36, 571710), (38, 541620), (40, 514539), (45, 457368), (51, 403560), (54, 381140), (57, 361080), (59, 348840), (60, 343026), (68, 302670), (72, 285855), (76, 270810), (85, 242136), (90, 228684), (95, 216648), (102, 201780), (108, 190570), (114, 180540), (118, 174420), (120, 171513), (135, 152456), (136, 151335), (152, 135405), (153, 134520), (170, 121068), (171, 120360), (177, 116280), (180, 114342), (190, 108324), (204, 100890), (216, 95285), (228, 90270), (236, 87210), (255, 80712), (270, 76228), (285, 72216), (295, 69768), (306, 67260), (323, 63720), (340, 60534), (342, 60180), (354, 58140), (360, 57171), (380, 54162), (408, 50445), (456, 45135), (459, 44840), (472, 43605), (510, 40356), (513, 40120), (531, 38760), (540, 38114), (570, 36108), (590, 34884), (612, 33630), (646, 31860), (680, 30267), (684, 30090), (708, 29070), (760, 27081), (765, 26904), (855, 24072), (885, 23256), (918, 22420), (969, 21240), (1003, 20520), (1020, 20178), (1026, 20060), (1062, 19380), (1080, 19057), (1121, 18360), (1140, 18054), (1180, 17442), (1224, 16815), (1292, 15930), (1368, 15045), (1416, 14535), (1530, 13452), (1593, 12920), (1615, 12744), (1710, 12036), (1770, 11628), (1836, 11210), (1938, 10620), (2006, 10260), (2040, 10089), (2052, 10030), (2124, 9690), (2242, 9180), (2280, 9027), (2295, 8968), (2360, 8721), (2565, 8024), (2584, 7965), (2655, 7752), (2907, 7080), (3009, 6840), (3060, 6726), (3186, 6460), (3230, 6372), (3363, 6120), (3420, 6018), (3540, 5814), (3672, 5605), (3876, 5310), (4012, 5130), (4104, 5015), (4248, 4845), (4484, 4590)]