420001790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{28591}}^1$

素因数の和:28724

約数の個数: 32

約数和(自身を含む): 821390976

約数和(自身を除く): 401389186

約数列:

[1, 2, 5, 10, 13, 26, 65, 113, 130, 226, 565, 1130, 1469, 2938, 7345, 14690, 28591, 57182, 142955, 285910, 371683, 743366, 1858415, 3230783, 3716830, 6461566, 16153915, 32307830, 42000179, 84000358, 210000895, 420001790]

約数ペア:

[(1, 420001790), (2, 210000895), (5, 84000358), (10, 42000179), (13, 32307830), (26, 16153915), (65, 6461566), (113, 3716830), (130, 3230783), (226, 1858415), (565, 743366), (1130, 371683), (1469, 285910), (2938, 142955), (7345, 57182), (14690, 28591)]