21280820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96731}}^1$

素因数の和:96751

約数の個数: 24

約数和(自身を含む): 48752928

約数和(自身を除く): 27472108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96731, 193462, 386924, 483655, 967310, 1064041, 1934620, 2128082, 4256164, 5320205, 10640410, 21280820]

約数ペア:

[(1, 21280820), (2, 10640410), (4, 5320205), (5, 4256164), (10, 2128082), (11, 1934620), (20, 1064041), (22, 967310), (44, 483655), (55, 386924), (110, 193462), (220, 96731)]