21172216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{203579}}^1$

素因数の和:203598

約数の個数: 16

約数和(自身を含む): 42751800

約数和(自身を除く): 21579584

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 203579, 407158, 814316, 1628632, 2646527, 5293054, 10586108, 21172216]

約数ペア:

[(1, 21172216), (2, 10586108), (4, 5293054), (8, 2646527), (13, 1628632), (26, 814316), (52, 407158), (104, 203579)]