639508

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 1197000

約数和(自身を除く): 557492

約数列:

[1, 2, 4, 29, 37, 58, 74, 116, 148, 149, 298, 596, 1073, 2146, 4292, 4321, 5513, 8642, 11026, 17284, 22052, 159877, 319754, 639508]

約数ペア:

[(1, 639508), (2, 319754), (4, 159877), (29, 22052), (37, 17284), (58, 11026), (74, 8642), (116, 5513), (148, 4321), (149, 4292), (298, 2146), (596, 1073)]