20781679360

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{797}}^1\times {\mathrm{1567}}^1$

素因数の和:2398

約数の個数: 144

約数和(自身を含む): 53709255936

約数和(自身を除く): 32927576576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 797, 832, 1040, 1280, 1567, 1594, 1664, 2080, 3134, 3188, 3328, 3985, 4160, 6268, 6376, 7835, 7970, 8320, 10361, 12536, 12752, 15670, 15940, 16640, 20371, 20722, 25072, 25504, 31340, 31880, 40742, 41444, 50144, 51008, 51805, 62680, 63760, 81484, 82888, 100288, 101855, 102016, 103610, 125360, 127520, 162968, 165776, 200576, 203710, 204032, 207220, 250720, 255040, 325936, 331552, 401152, 407420, 414440, 501440, 510080, 651872, 663104, 814840, 828880, 1002880, 1020160, 1248899, 1303744, 1326208, 1629680, 1657760, 2005760, 2497798, 2607488, 2652416, 3259360, 3315520, 4995596, 5214976, 6244495, 6518720, 6631040, 9991192, 12488990, 13037440, 13262080, 16235687, 19982384, 24977980, 26074880, 32471374, 39964768, 49955960, 64942748, 79929536, 81178435, 99911920, 129885496, 159859072, 162356870, 199823840, 259770992, 319718144, 324713740, 399647680, 519541984, 649427480, 799295360, 1039083968, 1298854960, 1598590720, 2078167936, 2597709920, 4156335872, 5195419840, 10390839680, 20781679360]

約数ペア:

[(1, 20781679360), (2, 10390839680), (4, 5195419840), (5, 4156335872), (8, 2597709920), (10, 2078167936), (13, 1598590720), (16, 1298854960), (20, 1039083968), (26, 799295360), (32, 649427480), (40, 519541984), (52, 399647680), (64, 324713740), (65, 319718144), (80, 259770992), (104, 199823840), (128, 162356870), (130, 159859072), (160, 129885496), (208, 99911920), (256, 81178435), (260, 79929536), (320, 64942748), (416, 49955960), (520, 39964768), (640, 32471374), (797, 26074880), (832, 24977980), (1040, 19982384), (1280, 16235687), (1567, 13262080), (1594, 13037440), (1664, 12488990), (2080, 9991192), (3134, 6631040), (3188, 6518720), (3328, 6244495), (3985, 5214976), (4160, 4995596), (6268, 3315520), (6376, 3259360), (7835, 2652416), (7970, 2607488), (8320, 2497798), (10361, 2005760), (12536, 1657760), (12752, 1629680), (15670, 1326208), (15940, 1303744), (16640, 1248899), (20371, 1020160), (20722, 1002880), (25072, 828880), (25504, 814840), (31340, 663104), (31880, 651872), (40742, 510080), (41444, 501440), (50144, 414440), (51008, 407420), (51805, 401152), (62680, 331552), (63760, 325936), (81484, 255040), (82888, 250720), (100288, 207220), (101855, 204032), (102016, 203710), (103610, 200576), (125360, 165776), (127520, 162968)]