80071640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181981}}^1$

素因数の和:182003

約数の個数: 32

約数和(自身を含む): 196540560

約数和(自身を除く): 116468920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 181981, 363962, 727924, 909905, 1455848, 1819810, 2001791, 3639620, 4003582, 7279240, 8007164, 10008955, 16014328, 20017910, 40035820, 80071640]

約数ペア:

[(1, 80071640), (2, 40035820), (4, 20017910), (5, 16014328), (8, 10008955), (10, 8007164), (11, 7279240), (20, 4003582), (22, 3639620), (40, 2001791), (44, 1819810), (55, 1455848), (88, 909905), (110, 727924), (220, 363962), (440, 181981)]