21349305

素因数分解:

$3^3\times 5^1\times {\mathrm{158143}}^1$

素因数の和:158157

約数の個数: 16

約数和(自身を含む): 37954560

約数和(自身を除く): 16605255

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158143, 474429, 790715, 1423287, 2372145, 4269861, 7116435, 21349305]

約数ペア:

[(1, 21349305), (3, 7116435), (5, 4269861), (9, 2372145), (15, 1423287), (27, 790715), (45, 474429), (135, 158143)]