21261396

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1867}}^1$

素因数の和:1960

約数の個数: 48

約数和(自身を含む): 54186944

約数和(自身を除く): 32925548

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 73, 78, 146, 156, 219, 292, 438, 876, 949, 1867, 1898, 2847, 3734, 3796, 5601, 5694, 7468, 11202, 11388, 22404, 24271, 48542, 72813, 97084, 136291, 145626, 272582, 291252, 408873, 545164, 817746, 1635492, 1771783, 3543566, 5315349, 7087132, 10630698, 21261396]

約数ペア:

[(1, 21261396), (2, 10630698), (3, 7087132), (4, 5315349), (6, 3543566), (12, 1771783), (13, 1635492), (26, 817746), (39, 545164), (52, 408873), (73, 291252), (78, 272582), (146, 145626), (156, 136291), (219, 97084), (292, 72813), (438, 48542), (876, 24271), (949, 22404), (1867, 11388), (1898, 11202), (2847, 7468), (3734, 5694), (3796, 5601)]