648408085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{19991}}^1$

素因数の和:20508

約数の個数: 16

約数和(自身を含む): 839664000

約数和(自身を除く): 191255915

約数列:

[1, 5, 13, 65, 499, 2495, 6487, 19991, 32435, 99955, 259883, 1299415, 9975509, 49877545, 129681617, 648408085]

約数ペア:

[(1, 648408085), (5, 129681617), (13, 49877545), (65, 9975509), (499, 1299415), (2495, 259883), (6487, 99955), (19991, 32435)]