20459715

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19211}}^1$

素因数の和:19290

約数の個数: 16

約数和(自身を含む): 33198336

約数和(自身を除く): 12738621

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19211, 57633, 96055, 288165, 1363981, 4091943, 6819905, 20459715]

約数ペア:

[(1, 20459715), (3, 6819905), (5, 4091943), (15, 1363981), (71, 288165), (213, 96055), (355, 57633), (1065, 19211)]