28581255

素因数分解:

$3^4\times 5^1\times {\mathrm{70571}}^1$

素因数の和:70588

約数の個数: 20

約数和(自身を含む): 51235272

約数和(自身を除く): 22654017

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70571, 211713, 352855, 635139, 1058565, 1905417, 3175695, 5716251, 9527085, 28581255]

約数ペア:

[(1, 28581255), (3, 9527085), (5, 5716251), (9, 3175695), (15, 1905417), (27, 1058565), (45, 635139), (81, 352855), (135, 211713), (405, 70571)]