20349040

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2251}}^1$

素因数の和:2377

約数の個数: 40

約数和(自身を含む): 47751408

約数和(自身を除く): 27402368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2251, 2260, 4502, 4520, 9004, 9040, 11255, 18008, 22510, 36016, 45020, 90040, 180080, 254363, 508726, 1017452, 1271815, 2034904, 2543630, 4069808, 5087260, 10174520, 20349040]

約数ペア:

[(1, 20349040), (2, 10174520), (4, 5087260), (5, 4069808), (8, 2543630), (10, 2034904), (16, 1271815), (20, 1017452), (40, 508726), (80, 254363), (113, 180080), (226, 90040), (452, 45020), (565, 36016), (904, 22510), (1130, 18008), (1808, 11255), (2251, 9040), (2260, 9004), (4502, 4520)]