81181808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{163673}}^1$

素因数の和:163712

約数の個数: 20

約数和(自身を含む): 162364608

約数和(自身を除く): 81182800

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 163673, 327346, 654692, 1309384, 2618768, 5073863, 10147726, 20295452, 40590904, 81181808]

約数ペア:

[(1, 81181808), (2, 40590904), (4, 20295452), (8, 10147726), (16, 5073863), (31, 2618768), (62, 1309384), (124, 654692), (248, 327346), (496, 163673)]