21065895

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15101}}^1$

素因数の和:15143

約数の個数: 24

約数和(自身を含む): 37694592

約数和(自身を除く): 16628697

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15101, 45303, 75505, 135909, 226515, 468131, 679545, 1404393, 2340655, 4213179, 7021965, 21065895]

約数ペア:

[(1, 21065895), (3, 7021965), (5, 4213179), (9, 2340655), (15, 1404393), (31, 679545), (45, 468131), (93, 226515), (155, 135909), (279, 75505), (465, 45303), (1395, 15101)]