289473025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{681113}}^1$

素因数の和:681140

約数の個数: 12

約数和(自身を含む): 380061612

約数和(自身を除く): 90588587

約数列:

[1, 5, 17, 25, 85, 425, 681113, 3405565, 11578921, 17027825, 57894605, 289473025]

約数ペア:

[(1, 289473025), (5, 57894605), (17, 17027825), (25, 11578921), (85, 3405565), (425, 681113)]