21278244

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{136399}}^1$

素因数の和:136419

約数の個数: 24

約数和(自身を含む): 53468800

約数和(自身を除く): 32190556

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 136399, 272798, 409197, 545596, 818394, 1636788, 1773187, 3546374, 5319561, 7092748, 10639122, 21278244]

約数ペア:

[(1, 21278244), (2, 10639122), (3, 7092748), (4, 5319561), (6, 3546374), (12, 1773187), (13, 1636788), (26, 818394), (39, 545596), (52, 409197), (78, 272798), (156, 136399)]