2021664775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{991}}^1\times {\mathrm{6277}}^1$

素因数の和:7291

約数の個数: 24

約数和(自身を含む): 2702854784

約数和(自身を除く): 681190009

約数列:

[1, 5, 13, 25, 65, 325, 991, 4955, 6277, 12883, 24775, 31385, 64415, 81601, 156925, 322075, 408005, 2040025, 6220507, 31102535, 80866591, 155512675, 404332955, 2021664775]

約数ペア:

[(1, 2021664775), (5, 404332955), (13, 155512675), (25, 80866591), (65, 31102535), (325, 6220507), (991, 2040025), (4955, 408005), (6277, 322075), (12883, 156925), (24775, 81601), (31385, 64415)]