127763380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{155809}}^1$

素因数の和:155859

約数の個数: 24

約数和(自身を含む): 274848840

約数和(自身を除く): 147085460

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 155809, 311618, 623236, 779045, 1558090, 3116180, 6388169, 12776338, 25552676, 31940845, 63881690, 127763380]

約数ペア:

[(1, 127763380), (2, 63881690), (4, 31940845), (5, 25552676), (10, 12776338), (20, 6388169), (41, 3116180), (82, 1558090), (164, 779045), (205, 623236), (410, 311618), (820, 155809)]