649780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 1392552

約数和(自身を除く): 742772

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 613, 1060, 1226, 2452, 3065, 6130, 12260, 32489, 64978, 129956, 162445, 324890, 649780]

約数ペア:

[(1, 649780), (2, 324890), (4, 162445), (5, 129956), (10, 64978), (20, 32489), (53, 12260), (106, 6130), (212, 3065), (265, 2452), (530, 1226), (613, 1060)]