20178859519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1\times {\mathrm{3319}}^1$

素因数の和:4351

約数の個数: 32

約数和(自身を含む): 25219676160

約数和(自身を除く): 5040816641

約数列:

[1, 7, 13, 71, 91, 497, 923, 941, 3319, 6461, 6587, 12233, 23233, 43147, 66811, 85631, 235649, 302029, 467677, 868543, 1649543, 3063437, 3123179, 6079801, 21444059, 21862253, 40601327, 221745709, 284209289, 1552219963, 2882694217, 20178859519]

約数ペア:

[(1, 20178859519), (7, 2882694217), (13, 1552219963), (71, 284209289), (91, 221745709), (497, 40601327), (923, 21862253), (941, 21444059), (3319, 6079801), (6461, 3123179), (6587, 3063437), (12233, 1649543), (23233, 868543), (43147, 467677), (66811, 302029), (85631, 235649)]