21129608

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{5189}}^1$

素因数の和:5704

約数の個数: 16

約数和(自身を含む): 39703500

約数和(自身を除く): 18573892

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 5189, 10378, 20756, 41512, 2641201, 5282402, 10564804, 21129608]

約数ペア:

[(1, 21129608), (2, 10564804), (4, 5282402), (8, 2641201), (509, 41512), (1018, 20756), (2036, 10378), (4072, 5189)]