21156018

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{271231}}^1$

素因数の和:271249

約数の個数: 16

約数和(自身を含む): 45566976

約数和(自身を除く): 24410958

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 271231, 542462, 813693, 1627386, 3526003, 7052006, 10578009, 21156018]

約数ペア:

[(1, 21156018), (2, 10578009), (3, 7052006), (6, 3526003), (13, 1627386), (26, 813693), (39, 542462), (78, 271231)]