123960520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{9901}}^1$

素因数の和:10225

約数の個数: 32

約数和(自身を含む): 279830520

約数和(自身を除く): 155870000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 9901, 12520, 19802, 39604, 49505, 79208, 99010, 198020, 396040, 3099013, 6198026, 12396052, 15495065, 24792104, 30990130, 61980260, 123960520]

約数ペア:

[(1, 123960520), (2, 61980260), (4, 30990130), (5, 24792104), (8, 15495065), (10, 12396052), (20, 6198026), (40, 3099013), (313, 396040), (626, 198020), (1252, 99010), (1565, 79208), (2504, 49505), (3130, 39604), (6260, 19802), (9901, 12520)]