21021260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{347}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 47882016

約数和(自身を除く): 26860756

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 233, 260, 347, 466, 694, 932, 1165, 1388, 1735, 2330, 3029, 3470, 4511, 4660, 6058, 6940, 9022, 12116, 15145, 18044, 22555, 30290, 45110, 60580, 80851, 90220, 161702, 323404, 404255, 808510, 1051063, 1617020, 2102126, 4204252, 5255315, 10510630, 21021260]

約数ペア:

[(1, 21021260), (2, 10510630), (4, 5255315), (5, 4204252), (10, 2102126), (13, 1617020), (20, 1051063), (26, 808510), (52, 404255), (65, 323404), (130, 161702), (233, 90220), (260, 80851), (347, 60580), (466, 45110), (694, 30290), (932, 22555), (1165, 18044), (1388, 15145), (1735, 12116), (2330, 9022), (3029, 6940), (3470, 6058), (4511, 4660)]