18581272

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{431}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 37091520

約数和(自身を除く): 18510248

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 317, 431, 634, 862, 1268, 1724, 2536, 3448, 5389, 7327, 10778, 14654, 21556, 29308, 43112, 58616, 136627, 273254, 546508, 1093016, 2322659, 4645318, 9290636, 18581272]

約数ペア:

[(1, 18581272), (2, 9290636), (4, 4645318), (8, 2322659), (17, 1093016), (34, 546508), (68, 273254), (136, 136627), (317, 58616), (431, 43112), (634, 29308), (862, 21556), (1268, 14654), (1724, 10778), (2536, 7327), (3448, 5389)]