19663340

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3917}}^1$

素因数の和:4177

約数の個数: 24

約数和(自身を含む): 41468112

約数和(自身を除く): 21804772

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 3917, 5020, 7834, 15668, 19585, 39170, 78340, 983167, 1966334, 3932668, 4915835, 9831670, 19663340]

約数ペア:

[(1, 19663340), (2, 9831670), (4, 4915835), (5, 3932668), (10, 1966334), (20, 983167), (251, 78340), (502, 39170), (1004, 19585), (1255, 15668), (2510, 7834), (3917, 5020)]