21007850

素因数分解:

$2^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{6271}}^1$

素因数の和:6350

約数の個数: 24

約数和(自身を含む): 39664128

約数和(自身を除く): 18656278

約数列:

[1, 2, 5, 10, 25, 50, 67, 134, 335, 670, 1675, 3350, 6271, 12542, 31355, 62710, 156775, 313550, 420157, 840314, 2100785, 4201570, 10503925, 21007850]

約数ペア:

[(1, 21007850), (2, 10503925), (5, 4201570), (10, 2100785), (25, 840314), (50, 420157), (67, 313550), (134, 156775), (335, 62710), (670, 31355), (1675, 12542), (3350, 6271)]