31517620

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7919}}^1$

素因数の和:8127

約数の個数: 24

約数和(自身を含む): 66528000

約数和(自身を除く): 35010380

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7919, 15838, 31676, 39595, 79190, 158380, 1575881, 3151762, 6303524, 7879405, 15758810, 31517620]

約数ペア:

[(1, 31517620), (2, 15758810), (4, 7879405), (5, 6303524), (10, 3151762), (20, 1575881), (199, 158380), (398, 79190), (796, 39595), (995, 31676), (1990, 15838), (3980, 7919)]