31421420

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{5591}}^1$

素因数の和:5881

約数の個数: 24

約数和(自身を含む): 66231648

約数和(自身を除く): 34810228

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 5591, 5620, 11182, 22364, 27955, 55910, 111820, 1571071, 3142142, 6284284, 7855355, 15710710, 31421420]

約数ペア:

[(1, 31421420), (2, 15710710), (4, 7855355), (5, 6284284), (10, 3142142), (20, 1571071), (281, 111820), (562, 55910), (1124, 27955), (1405, 22364), (2810, 11182), (5591, 5620)]