25972420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 56867328

約数和(自身を除く): 30894908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 257, 310, 326, 514, 620, 652, 815, 1028, 1285, 1630, 2570, 3260, 5053, 5140, 7967, 10106, 15934, 20212, 25265, 31868, 39835, 41891, 50530, 79670, 83782, 101060, 159340, 167564, 209455, 418910, 837820, 1298621, 2597242, 5194484, 6493105, 12986210, 25972420]

約数ペア:

[(1, 25972420), (2, 12986210), (4, 6493105), (5, 5194484), (10, 2597242), (20, 1298621), (31, 837820), (62, 418910), (124, 209455), (155, 167564), (163, 159340), (257, 101060), (310, 83782), (326, 79670), (514, 50530), (620, 41891), (652, 39835), (815, 31868), (1028, 25265), (1285, 20212), (1630, 15934), (2570, 10106), (3260, 7967), (5053, 5140)]