21100808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155153}}^1$

素因数の和:155176

約数の個数: 16

約数和(自身を含む): 41891580

約数和(自身を除く): 20790772

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155153, 310306, 620612, 1241224, 2637601, 5275202, 10550404, 21100808]

約数ペア:

[(1, 21100808), (2, 10550404), (4, 5275202), (8, 2637601), (17, 1241224), (34, 620612), (68, 310306), (136, 155153)]