20921728

素因数分解:

$2^7\times {\mathrm{79}}^1\times {\mathrm{2069}}^1$

素因数の和:2162

約数の個数: 32

約数和(自身を含む): 42228000

約数和(自身を除く): 21306272

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 316, 632, 1264, 2069, 2528, 4138, 5056, 8276, 10112, 16552, 33104, 66208, 132416, 163451, 264832, 326902, 653804, 1307608, 2615216, 5230432, 10460864, 20921728]

約数ペア:

[(1, 20921728), (2, 10460864), (4, 5230432), (8, 2615216), (16, 1307608), (32, 653804), (64, 326902), (79, 264832), (128, 163451), (158, 132416), (316, 66208), (632, 33104), (1264, 16552), (2069, 10112), (2528, 8276), (4138, 5056)]