21642940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98377}}^1$

素因数の和:98397

約数の個数: 24

約数和(自身を含む): 49582512

約数和(自身を除く): 27939572

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98377, 196754, 393508, 491885, 983770, 1082147, 1967540, 2164294, 4328588, 5410735, 10821470, 21642940]

約数ペア:

[(1, 21642940), (2, 10821470), (4, 5410735), (5, 4328588), (10, 2164294), (11, 1967540), (20, 1082147), (22, 983770), (44, 491885), (55, 393508), (110, 196754), (220, 98377)]