20671220

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2879}}^1$

素因数の和:3247

約数の個数: 24

約数和(自身を含む): 43545600

約数和(自身を除く): 22874380

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 2879, 3590, 5758, 7180, 11516, 14395, 28790, 57580, 1033561, 2067122, 4134244, 5167805, 10335610, 20671220]

約数ペア:

[(1, 20671220), (2, 10335610), (4, 5167805), (5, 4134244), (10, 2067122), (20, 1033561), (359, 57580), (718, 28790), (1436, 14395), (1795, 11516), (2879, 7180), (3590, 5758)]