20185640

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2917}}^1$

素因数の和:3101

約数の個数: 32

約数和(自身を含む): 45695880

約数和(自身を除く): 25510240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2917, 3460, 5834, 6920, 11668, 14585, 23336, 29170, 58340, 116680, 504641, 1009282, 2018564, 2523205, 4037128, 5046410, 10092820, 20185640]

約数ペア:

[(1, 20185640), (2, 10092820), (4, 5046410), (5, 4037128), (8, 2523205), (10, 2018564), (20, 1009282), (40, 504641), (173, 116680), (346, 58340), (692, 29170), (865, 23336), (1384, 14585), (1730, 11668), (2917, 6920), (3460, 5834)]