20813744

素因数分解:

$2^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2239}}^1$

素因数の和:2337

約数の個数: 40

約数和(自身を含む): 46663680

約数和(自身を除く): 25849936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 83, 112, 166, 332, 581, 664, 1162, 1328, 2239, 2324, 4478, 4648, 8956, 9296, 15673, 17912, 31346, 35824, 62692, 125384, 185837, 250768, 371674, 743348, 1300859, 1486696, 2601718, 2973392, 5203436, 10406872, 20813744]

約数ペア:

[(1, 20813744), (2, 10406872), (4, 5203436), (7, 2973392), (8, 2601718), (14, 1486696), (16, 1300859), (28, 743348), (56, 371674), (83, 250768), (112, 185837), (166, 125384), (332, 62692), (581, 35824), (664, 31346), (1162, 17912), (1328, 15673), (2239, 9296), (2324, 8956), (4478, 4648)]