81254915

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{15581}}^1$

素因数の和:15742

約数の個数: 16

約数和(自身を含む): 112190400

約数和(自身を除く): 30935485

約数列:

[1, 5, 7, 35, 149, 745, 1043, 5215, 15581, 77905, 109067, 545335, 2321569, 11607845, 16250983, 81254915]

約数ペア:

[(1, 81254915), (5, 16250983), (7, 11607845), (35, 2321569), (149, 545335), (745, 109067), (1043, 77905), (5215, 15581)]