640550

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:592

約数の個数: 24

約数和(自身を含む): 1245456

約数和(自身を除く): 604906

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 115, 230, 557, 575, 1114, 1150, 2785, 5570, 12811, 13925, 25622, 27850, 64055, 128110, 320275, 640550]

約数ペア:

[(1, 640550), (2, 320275), (5, 128110), (10, 64055), (23, 27850), (25, 25622), (46, 13925), (50, 12811), (115, 5570), (230, 2785), (557, 1150), (575, 1114)]