205017580

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{140423}}^1$

素因数の和:140505

約数の個数: 24

約数和(自身を含む): 436437792

約数和(自身を除く): 231420212

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 140423, 280846, 561692, 702115, 1404230, 2808460, 10250879, 20501758, 41003516, 51254395, 102508790, 205017580]

約数ペア:

[(1, 205017580), (2, 102508790), (4, 51254395), (5, 41003516), (10, 20501758), (20, 10250879), (73, 2808460), (146, 1404230), (292, 702115), (365, 561692), (730, 280846), (1460, 140423)]