21019980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1571}}^1$

素因数の和:1806

約数の個数: 48

約数和(自身を含む): 59157504

約数和(自身を除く): 38137524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 1115, 1338, 1571, 2230, 2676, 3142, 3345, 4460, 4713, 6284, 6690, 7855, 9426, 13380, 15710, 18852, 23565, 31420, 47130, 94260, 350333, 700666, 1050999, 1401332, 1751665, 2101998, 3503330, 4203996, 5254995, 7006660, 10509990, 21019980]

約数ペア:

[(1, 21019980), (2, 10509990), (3, 7006660), (4, 5254995), (5, 4203996), (6, 3503330), (10, 2101998), (12, 1751665), (15, 1401332), (20, 1050999), (30, 700666), (60, 350333), (223, 94260), (446, 47130), (669, 31420), (892, 23565), (1115, 18852), (1338, 15710), (1571, 13380), (2230, 9426), (2676, 7855), (3142, 6690), (3345, 6284), (4460, 4713)]