25355240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1291}}^1$

素因数の和:1793

約数の個数: 32

約数和(自身を含む): 57209760

約数和(自身を除く): 31854520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1291, 1964, 2455, 2582, 3928, 4910, 5164, 6455, 9820, 10328, 12910, 19640, 25820, 51640, 633881, 1267762, 2535524, 3169405, 5071048, 6338810, 12677620, 25355240]

約数ペア:

[(1, 25355240), (2, 12677620), (4, 6338810), (5, 5071048), (8, 3169405), (10, 2535524), (20, 1267762), (40, 633881), (491, 51640), (982, 25820), (1291, 19640), (1964, 12910), (2455, 10328), (2582, 9820), (3928, 6455), (4910, 5164)]