20077850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 24919270

約数列:

[1, 2, 5, 10, 13, 17, 23, 25, 26, 34, 46, 50, 65, 79, 85, 115, 130, 158, 170, 221, 230, 299, 325, 391, 395, 425, 442, 575, 598, 650, 782, 790, 850, 1027, 1105, 1150, 1343, 1495, 1817, 1955, 1975, 2054, 2210, 2686, 2990, 3634, 3910, 3950, 5083, 5135, 5525, 6715, 7475, 9085, 9775, 10166, 10270, 11050, 13430, 14950, 17459, 18170, 19550, 23621, 25415, 25675, 30889, 33575, 34918, 45425, 47242, 50830, 51350, 61778, 67150, 87295, 90850, 118105, 127075, 154445, 174590, 236210, 254150, 308890, 401557, 436475, 590525, 772225, 803114, 872950, 1181050, 1544450, 2007785, 4015570, 10038925, 20077850]

約数ペア:

[(1, 20077850), (2, 10038925), (5, 4015570), (10, 2007785), (13, 1544450), (17, 1181050), (23, 872950), (25, 803114), (26, 772225), (34, 590525), (46, 436475), (50, 401557), (65, 308890), (79, 254150), (85, 236210), (115, 174590), (130, 154445), (158, 127075), (170, 118105), (221, 90850), (230, 87295), (299, 67150), (325, 61778), (391, 51350), (395, 50830), (425, 47242), (442, 45425), (575, 34918), (598, 33575), (650, 30889), (782, 25675), (790, 25415), (850, 23621), (1027, 19550), (1105, 18170), (1150, 17459), (1343, 14950), (1495, 13430), (1817, 11050), (1955, 10270), (1975, 10166), (2054, 9775), (2210, 9085), (2686, 7475), (2990, 6715), (3634, 5525), (3910, 5135), (3950, 5083)]