81120140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98927}}^1$

素因数の和:98977

約数の個数: 24

約数和(自身を含む): 174508992

約数和(自身を除く): 93388852

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 98927, 197854, 395708, 494635, 989270, 1978540, 4056007, 8112014, 16224028, 20280035, 40560070, 81120140]

約数ペア:

[(1, 81120140), (2, 40560070), (4, 20280035), (5, 16224028), (10, 8112014), (20, 4056007), (41, 1978540), (82, 989270), (164, 494635), (205, 395708), (410, 197854), (820, 98927)]