8355820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2038

約数の個数: 48

約数和(自身を含む): 20160000

約数和(自身を除く): 11804180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 1999, 2090, 3998, 4180, 7996, 9995, 19990, 21989, 37981, 39980, 43978, 75962, 87956, 109945, 151924, 189905, 219890, 379810, 417791, 439780, 759620, 835582, 1671164, 2088955, 4177910, 8355820]

約数ペア:

[(1, 8355820), (2, 4177910), (4, 2088955), (5, 1671164), (10, 835582), (11, 759620), (19, 439780), (20, 417791), (22, 379810), (38, 219890), (44, 189905), (55, 151924), (76, 109945), (95, 87956), (110, 75962), (190, 43978), (209, 39980), (220, 37981), (380, 21989), (418, 19990), (836, 9995), (1045, 7996), (1999, 4180), (2090, 3998)]