81169972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{19759}}^1$

素因数の和:19855

約数の個数: 24

約数和(自身を含む): 154918400

約数和(自身を除く): 73748428

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 19759, 39518, 79036, 256867, 513734, 1027468, 1560961, 3121922, 6243844, 20292493, 40584986, 81169972]

約数ペア:

[(1, 81169972), (2, 40584986), (4, 20292493), (13, 6243844), (26, 3121922), (52, 1560961), (79, 1027468), (158, 513734), (316, 256867), (1027, 79036), (2054, 39518), (4108, 19759)]