20919700

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4451}}^1$

素因数の和:4512

約数の個数: 36

約数和(自身を含む): 46372032

約数和(自身を除く): 25452332

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4451, 4700, 8902, 17804, 22255, 44510, 89020, 111275, 209197, 222550, 418394, 445100, 836788, 1045985, 2091970, 4183940, 5229925, 10459850, 20919700]

約数ペア:

[(1, 20919700), (2, 10459850), (4, 5229925), (5, 4183940), (10, 2091970), (20, 1045985), (25, 836788), (47, 445100), (50, 418394), (94, 222550), (100, 209197), (188, 111275), (235, 89020), (470, 44510), (940, 22255), (1175, 17804), (2350, 8902), (4451, 4700)]