21172084

素因数分解:

$2^2\times {\mathrm{331}}^1\times {\mathrm{15991}}^1$

素因数の和:16326

約数の個数: 12

約数和(自身を含む): 37165408

約数和(自身を除く): 15993324

約数列:

[1, 2, 4, 331, 662, 1324, 15991, 31982, 63964, 5293021, 10586042, 21172084]

約数ペア:

[(1, 21172084), (2, 10586042), (4, 5293021), (331, 63964), (662, 31982), (1324, 15991)]