20281984

素因数分解:

$2^7\times {\mathrm{193}}^1\times {\mathrm{821}}^1$

素因数の和:1028

約数の個数: 32

約数和(自身を含む): 40664340

約数和(自身を除く): 20382356

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 193, 386, 772, 821, 1544, 1642, 3088, 3284, 6176, 6568, 12352, 13136, 24704, 26272, 52544, 105088, 158453, 316906, 633812, 1267624, 2535248, 5070496, 10140992, 20281984]

約数ペア:

[(1, 20281984), (2, 10140992), (4, 5070496), (8, 2535248), (16, 1267624), (32, 633812), (64, 316906), (128, 158453), (193, 105088), (386, 52544), (772, 26272), (821, 24704), (1544, 13136), (1642, 12352), (3088, 6568), (3284, 6176)]