28891564

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:650

約数の個数: 36

約数和(自身を含む): 55544160

約数和(自身を除く): 26652596

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 169, 316, 338, 541, 676, 1027, 1082, 2054, 2164, 4108, 7033, 13351, 14066, 26702, 28132, 42739, 53404, 85478, 91429, 170956, 182858, 365716, 555607, 1111214, 2222428, 7222891, 14445782, 28891564]

約数ペア:

[(1, 28891564), (2, 14445782), (4, 7222891), (13, 2222428), (26, 1111214), (52, 555607), (79, 365716), (158, 182858), (169, 170956), (316, 91429), (338, 85478), (541, 53404), (676, 42739), (1027, 28132), (1082, 26702), (2054, 14066), (2164, 13351), (4108, 7033)]