19912857580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{349471}}^1$

素因数の和:349535

約数の個数: 96

約数和(自身を含む): 53544701952

約数和(自身を除く): 33631844372

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 37, 44, 55, 70, 74, 77, 110, 140, 148, 154, 185, 220, 259, 308, 370, 385, 407, 518, 740, 770, 814, 1036, 1295, 1540, 1628, 2035, 2590, 2849, 4070, 5180, 5698, 8140, 11396, 14245, 28490, 56980, 349471, 698942, 1397884, 1747355, 2446297, 3494710, 3844181, 4892594, 6989420, 7688362, 9785188, 12231485, 12930427, 15376724, 19220905, 24462970, 25860854, 26909267, 38441810, 48925940, 51721708, 53818534, 64652135, 76883620, 90512989, 107637068, 129304270, 134546335, 142234697, 181025978, 258608540, 269092670, 284469394, 362051956, 452564945, 538185340, 568938788, 711173485, 905129890, 995642879, 1422346970, 1810259780, 1991285758, 2844693940, 3982571516, 4978214395, 9956428790, 19912857580]

約数ペア:

[(1, 19912857580), (2, 9956428790), (4, 4978214395), (5, 3982571516), (7, 2844693940), (10, 1991285758), (11, 1810259780), (14, 1422346970), (20, 995642879), (22, 905129890), (28, 711173485), (35, 568938788), (37, 538185340), (44, 452564945), (55, 362051956), (70, 284469394), (74, 269092670), (77, 258608540), (110, 181025978), (140, 142234697), (148, 134546335), (154, 129304270), (185, 107637068), (220, 90512989), (259, 76883620), (308, 64652135), (370, 53818534), (385, 51721708), (407, 48925940), (518, 38441810), (740, 26909267), (770, 25860854), (814, 24462970), (1036, 19220905), (1295, 15376724), (1540, 12930427), (1628, 12231485), (2035, 9785188), (2590, 7688362), (2849, 6989420), (4070, 4892594), (5180, 3844181), (5698, 3494710), (8140, 2446297), (11396, 1747355), (14245, 1397884), (28490, 698942), (56980, 349471)]