20525080

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3917}}^1$

素因数の和:4059

約数の個数: 32

約数和(自身を含む): 46545840

約数和(自身を除く): 26020760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3917, 5240, 7834, 15668, 19585, 31336, 39170, 78340, 156680, 513127, 1026254, 2052508, 2565635, 4105016, 5131270, 10262540, 20525080]

約数ペア:

[(1, 20525080), (2, 10262540), (4, 5131270), (5, 4105016), (8, 2565635), (10, 2052508), (20, 1026254), (40, 513127), (131, 156680), (262, 78340), (524, 39170), (655, 31336), (1048, 19585), (1310, 15668), (2620, 7834), (3917, 5240)]