7278255

素因数分解:

$3^4\times 5^1\times {\mathrm{17971}}^1$

素因数の和:17988

約数の個数: 20

約数和(自身を含む): 13047672

約数和(自身を除く): 5769417

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 17971, 53913, 89855, 161739, 269565, 485217, 808695, 1455651, 2426085, 7278255]

約数ペア:

[(1, 7278255), (3, 2426085), (5, 1455651), (9, 808695), (15, 485217), (27, 269565), (45, 161739), (81, 89855), (135, 53913), (405, 17971)]