81146416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20533}}^1$

素因数の和:20573

約数の個数: 40

約数和(自身を含む): 178235120

約数和(自身を除く): 97088704

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20533, 41066, 82132, 164264, 266929, 328528, 390127, 533858, 780254, 1067716, 1560508, 2135432, 3121016, 4270864, 5071651, 6242032, 10143302, 20286604, 40573208, 81146416]

約数ペア:

[(1, 81146416), (2, 40573208), (4, 20286604), (8, 10143302), (13, 6242032), (16, 5071651), (19, 4270864), (26, 3121016), (38, 2135432), (52, 1560508), (76, 1067716), (104, 780254), (152, 533858), (208, 390127), (247, 328528), (304, 266929), (494, 164264), (988, 82132), (1976, 41066), (3952, 20533)]