20177960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^3\times {\mathrm{379}}^1$

素因数の和:423

約数の個数: 64

約数和(自身を含む): 50068800

約数和(自身を除く): 29890840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 379, 440, 484, 605, 758, 968, 1210, 1331, 1516, 1895, 2420, 2662, 3032, 3790, 4169, 4840, 5324, 6655, 7580, 8338, 10648, 13310, 15160, 16676, 20845, 26620, 33352, 41690, 45859, 53240, 83380, 91718, 166760, 183436, 229295, 366872, 458590, 504449, 917180, 1008898, 1834360, 2017796, 2522245, 4035592, 5044490, 10088980, 20177960]

約数ペア:

[(1, 20177960), (2, 10088980), (4, 5044490), (5, 4035592), (8, 2522245), (10, 2017796), (11, 1834360), (20, 1008898), (22, 917180), (40, 504449), (44, 458590), (55, 366872), (88, 229295), (110, 183436), (121, 166760), (220, 91718), (242, 83380), (379, 53240), (440, 45859), (484, 41690), (605, 33352), (758, 26620), (968, 20845), (1210, 16676), (1331, 15160), (1516, 13310), (1895, 10648), (2420, 8338), (2662, 7580), (3032, 6655), (3790, 5324), (4169, 4840)]