20039420

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8867}}^1$

素因数の和:8989

約数の個数: 24

約数和(自身を含む): 42459984

約数和(自身を除く): 22420564

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 8867, 17734, 35468, 44335, 88670, 177340, 1001971, 2003942, 4007884, 5009855, 10019710, 20039420]

約数ペア:

[(1, 20039420), (2, 10019710), (4, 5009855), (5, 4007884), (10, 2003942), (20, 1001971), (113, 177340), (226, 88670), (452, 44335), (565, 35468), (1130, 17734), (2260, 8867)]