21345255

素因数分解:

$3^3\times 5^1\times {\mathrm{158113}}^1$

素因数の和:158127

約数の個数: 16

約数和(自身を含む): 37947360

約数和(自身を除く): 16602105

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158113, 474339, 790565, 1423017, 2371695, 4269051, 7115085, 21345255]

約数ペア:

[(1, 21345255), (3, 7115085), (5, 4269051), (9, 2371695), (15, 1423017), (27, 790565), (45, 474339), (135, 158113)]