21103640

素因数分解:

$2^3\times 5^1\times {\mathrm{527591}}^1$

素因数の和:527602

約数の個数: 16

約数和(自身を含む): 47483280

約数和(自身を除く): 26379640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 527591, 1055182, 2110364, 2637955, 4220728, 5275910, 10551820, 21103640]

約数ペア:

[(1, 21103640), (2, 10551820), (4, 5275910), (5, 4220728), (8, 2637955), (10, 2110364), (20, 1055182), (40, 527591)]