21580460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{421}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 49768992

約数和(自身を除く): 28188532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 233, 421, 466, 842, 932, 1165, 1684, 2105, 2330, 2563, 4210, 4631, 4660, 5126, 8420, 9262, 10252, 12815, 18524, 23155, 25630, 46310, 51260, 92620, 98093, 196186, 392372, 490465, 980930, 1079023, 1961860, 2158046, 4316092, 5395115, 10790230, 21580460]

約数ペア:

[(1, 21580460), (2, 10790230), (4, 5395115), (5, 4316092), (10, 2158046), (11, 1961860), (20, 1079023), (22, 980930), (44, 490465), (55, 392372), (110, 196186), (220, 98093), (233, 92620), (421, 51260), (466, 46310), (842, 25630), (932, 23155), (1165, 18524), (1684, 12815), (2105, 10252), (2330, 9262), (2563, 8420), (4210, 5126), (4631, 4660)]