18720138

素因数分解:

$2^1\times 3^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{397}}^1$

素因数の和:702

約数の個数: 32

約数和(自身を含む): 38972160

約数和(自身を除く): 20252022

約数列:

[1, 2, 3, 6, 29, 58, 87, 174, 271, 397, 542, 794, 813, 1191, 1626, 2382, 7859, 11513, 15718, 23026, 23577, 34539, 47154, 69078, 107587, 215174, 322761, 645522, 3120023, 6240046, 9360069, 18720138]

約数ペア:

[(1, 18720138), (2, 9360069), (3, 6240046), (6, 3120023), (29, 645522), (58, 322761), (87, 215174), (174, 107587), (271, 69078), (397, 47154), (542, 34539), (794, 23577), (813, 23026), (1191, 15718), (1626, 11513), (2382, 7859)]