21203215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5281}}^1$

素因数の和:5370

約数の個数: 16

約数和(自身を含む): 28142496

約数和(自身を除く): 6939281

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 5281, 26405, 58091, 290455, 385513, 1927565, 4240643, 21203215]

約数ペア:

[(1, 21203215), (5, 4240643), (11, 1927565), (55, 385513), (73, 290455), (365, 58091), (803, 26405), (4015, 5281)]