393255

素因数分解:

$3^4\times 5^1\times {\mathrm{971}}^1$

素因数の和:988

約数の個数: 20

約数和(自身を含む): 705672

約数和(自身を除く): 312417

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 971, 2913, 4855, 8739, 14565, 26217, 43695, 78651, 131085, 393255]

約数ペア:

[(1, 393255), (3, 131085), (5, 78651), (9, 43695), (15, 26217), (27, 14565), (45, 8739), (81, 4855), (135, 2913), (405, 971)]