21528040

素因数分解:

$2^3\times 5^1\times {\mathrm{538201}}^1$

素因数の和:538212

約数の個数: 16

約数和(自身を含む): 48438180

約数和(自身を除く): 26910140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538201, 1076402, 2152804, 2691005, 4305608, 5382010, 10764020, 21528040]

約数ペア:

[(1, 21528040), (2, 10764020), (4, 5382010), (5, 4305608), (8, 2691005), (10, 2152804), (20, 1076402), (40, 538201)]