20878226

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{9007}}^1$

素因数の和:9089

約数の個数: 16

約数和(自身を含む): 33509760

約数和(自身を除く): 12631534

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 9007, 18014, 171133, 342266, 549427, 1098854, 10439113, 20878226]

約数ペア:

[(1, 20878226), (2, 10439113), (19, 1098854), (38, 549427), (61, 342266), (122, 171133), (1159, 18014), (2318, 9007)]