20204125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:262

約数の個数: 32

約数和(自身を含む): 27256320

約数和(自身を除く): 7052195

約数列:

[1, 5, 19, 25, 47, 95, 125, 181, 235, 475, 893, 905, 1175, 2375, 3439, 4465, 4525, 5875, 8507, 17195, 22325, 22625, 42535, 85975, 111625, 161633, 212675, 429875, 808165, 1063375, 4040825, 20204125]

約数ペア:

[(1, 20204125), (5, 4040825), (19, 1063375), (25, 808165), (47, 429875), (95, 212675), (125, 161633), (181, 111625), (235, 85975), (475, 42535), (893, 22625), (905, 22325), (1175, 17195), (2375, 8507), (3439, 5875), (4465, 4525)]