20212580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1237}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 45756480

約数和(自身を除く): 25543900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1237, 1634, 2474, 3268, 4085, 4948, 6185, 8170, 12370, 16340, 23503, 24740, 47006, 53191, 94012, 106382, 117515, 212764, 235030, 265955, 470060, 531910, 1010629, 1063820, 2021258, 4042516, 5053145, 10106290, 20212580]

約数ペア:

[(1, 20212580), (2, 10106290), (4, 5053145), (5, 4042516), (10, 2021258), (19, 1063820), (20, 1010629), (38, 531910), (43, 470060), (76, 265955), (86, 235030), (95, 212764), (172, 117515), (190, 106382), (215, 94012), (380, 53191), (430, 47006), (817, 24740), (860, 23503), (1237, 16340), (1634, 12370), (2474, 8170), (3268, 6185), (4085, 4948)]