21720170

素因数分解:

$2^1\times 5^1\times {\mathrm{467}}^1\times {\mathrm{4651}}^1$

素因数の和:5125

約数の個数: 16

約数和(自身を含む): 39188448

約数和(自身を除く): 17468278

約数列:

[1, 2, 5, 10, 467, 934, 2335, 4651, 4670, 9302, 23255, 46510, 2172017, 4344034, 10860085, 21720170]

約数ペア:

[(1, 21720170), (2, 10860085), (5, 4344034), (10, 2172017), (467, 46510), (934, 23255), (2335, 9302), (4651, 4670)]