21351808

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{5381}}^1$

素因数の和:5426

約数の個数: 32

約数和(自身を含む): 43917120

約数和(自身を除く): 22565312

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 5381, 10762, 21524, 43048, 86096, 166811, 172192, 333622, 344384, 667244, 688768, 1334488, 2668976, 5337952, 10675904, 21351808]

約数ペア:

[(1, 21351808), (2, 10675904), (4, 5337952), (8, 2668976), (16, 1334488), (31, 688768), (32, 667244), (62, 344384), (64, 333622), (124, 172192), (128, 166811), (248, 86096), (496, 43048), (992, 21524), (1984, 10762), (3968, 5381)]