20910618625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{8573}}^1$

素因数の和:8699

約数の個数: 64

約数和(自身を含む): 29960985600

約数和(自身を除く): 9050366975

約数列:

[1, 5, 13, 19, 25, 65, 79, 95, 125, 247, 325, 395, 475, 1027, 1235, 1501, 1625, 1975, 2375, 5135, 6175, 7505, 8573, 9875, 19513, 25675, 30875, 37525, 42865, 97565, 111449, 128375, 162887, 187625, 214325, 487825, 557245, 677267, 814435, 1071625, 2117531, 2439125, 2786225, 3386335, 4072175, 8804471, 10587655, 12868073, 13931125, 16931675, 20360875, 44022355, 52938275, 64340365, 84658375, 167284949, 220111775, 264691375, 321701825, 836424745, 1100558875, 1608509125, 4182123725, 20910618625]

約数ペア:

[(1, 20910618625), (5, 4182123725), (13, 1608509125), (19, 1100558875), (25, 836424745), (65, 321701825), (79, 264691375), (95, 220111775), (125, 167284949), (247, 84658375), (325, 64340365), (395, 52938275), (475, 44022355), (1027, 20360875), (1235, 16931675), (1501, 13931125), (1625, 12868073), (1975, 10587655), (2375, 8804471), (5135, 4072175), (6175, 3386335), (7505, 2786225), (8573, 2439125), (9875, 2117531), (19513, 1071625), (25675, 814435), (30875, 677267), (37525, 557245), (42865, 487825), (97565, 214325), (111449, 187625), (128375, 162887)]