20921848

素因数分解:

$2^3\times {\mathrm{331}}^1\times {\mathrm{7901}}^1$

素因数の和:8238

約数の個数: 16

約数和(自身を含む): 39351960

約数和(自身を除く): 18430112

約数列:

[1, 2, 4, 8, 331, 662, 1324, 2648, 7901, 15802, 31604, 63208, 2615231, 5230462, 10460924, 20921848]

約数ペア:

[(1, 20921848), (2, 10460924), (4, 5230462), (8, 2615231), (331, 63208), (662, 31604), (1324, 15802), (2648, 7901)]