21492460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{463}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 49577472

約数和(自身を除く): 28085012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 211, 220, 422, 463, 844, 926, 1055, 1852, 2110, 2315, 2321, 4220, 4630, 4642, 5093, 9260, 9284, 10186, 11605, 20372, 23210, 25465, 46420, 50930, 97693, 101860, 195386, 390772, 488465, 976930, 1074623, 1953860, 2149246, 4298492, 5373115, 10746230, 21492460]

約数ペア:

[(1, 21492460), (2, 10746230), (4, 5373115), (5, 4298492), (10, 2149246), (11, 1953860), (20, 1074623), (22, 976930), (44, 488465), (55, 390772), (110, 195386), (211, 101860), (220, 97693), (422, 50930), (463, 46420), (844, 25465), (926, 23210), (1055, 20372), (1852, 11605), (2110, 10186), (2315, 9284), (2321, 9260), (4220, 5093), (4630, 4642)]