19878775

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3917}}^1$

素因数の和:3963

約数の個数: 24

約数和(自身を含む): 29149920

約数和(自身を除く): 9271145

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 3917, 5075, 19585, 27419, 97925, 113593, 137095, 567965, 685475, 795151, 2839825, 3975755, 19878775]

約数ペア:

[(1, 19878775), (5, 3975755), (7, 2839825), (25, 795151), (29, 685475), (35, 567965), (145, 137095), (175, 113593), (203, 97925), (725, 27419), (1015, 19585), (3917, 5075)]