21964045

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 26864640

約数和(自身を除く): 4900595

約数列:

[1, 5, 109, 191, 211, 545, 955, 1055, 20819, 22999, 40301, 104095, 114995, 201505, 4392809, 21964045]

約数ペア:

[(1, 21964045), (5, 4392809), (109, 201505), (191, 114995), (211, 104095), (545, 40301), (955, 22999), (1055, 20819)]