64261250

素因数分解:

$2^1\times 5^4\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:632

約数の個数: 40

約数和(自身を含む): 121882860

約数和(自身を除く): 57621610

約数列:

[1, 2, 5, 10, 25, 50, 101, 125, 202, 250, 505, 509, 625, 1010, 1018, 1250, 2525, 2545, 5050, 5090, 12625, 12725, 25250, 25450, 51409, 63125, 63625, 102818, 126250, 127250, 257045, 318125, 514090, 636250, 1285225, 2570450, 6426125, 12852250, 32130625, 64261250]

約数ペア:

[(1, 64261250), (2, 32130625), (5, 12852250), (10, 6426125), (25, 2570450), (50, 1285225), (101, 636250), (125, 514090), (202, 318125), (250, 257045), (505, 127250), (509, 126250), (625, 102818), (1010, 63625), (1018, 63125), (1250, 51409), (2525, 25450), (2545, 25250), (5050, 12725), (5090, 12625)]