21891820

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{3049}}^1$

素因数の和:3417

約数の個数: 24

約数和(自身を含む): 46116000

約数和(自身を除く): 24224180

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3049, 3590, 6098, 7180, 12196, 15245, 30490, 60980, 1094591, 2189182, 4378364, 5472955, 10945910, 21891820]

約数ペア:

[(1, 21891820), (2, 10945910), (4, 5472955), (5, 4378364), (10, 2189182), (20, 1094591), (359, 60980), (718, 30490), (1436, 15245), (1795, 12196), (3049, 7180), (3590, 6098)]