21986200

素因数分解:

$2^3\times 5^2\times {\mathrm{211}}^1\times {\mathrm{521}}^1$

素因数の和:748

約数の個数: 48

約数和(自身を含む): 51458760

約数和(自身を除く): 29472560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 211, 422, 521, 844, 1042, 1055, 1688, 2084, 2110, 2605, 4168, 4220, 5210, 5275, 8440, 10420, 10550, 13025, 20840, 21100, 26050, 42200, 52100, 104200, 109931, 219862, 439724, 549655, 879448, 1099310, 2198620, 2748275, 4397240, 5496550, 10993100, 21986200]

約数ペア:

[(1, 21986200), (2, 10993100), (4, 5496550), (5, 4397240), (8, 2748275), (10, 2198620), (20, 1099310), (25, 879448), (40, 549655), (50, 439724), (100, 219862), (200, 109931), (211, 104200), (422, 52100), (521, 42200), (844, 26050), (1042, 21100), (1055, 20840), (1688, 13025), (2084, 10550), (2110, 10420), (2605, 8440), (4168, 5275), (4220, 5210)]