21665936

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{4091}}^1$

素因数の和:4430

約数の個数: 20

約数和(自身を含む): 42114864

約数和(自身を除く): 20448928

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 4091, 5296, 8182, 16364, 32728, 65456, 1354121, 2708242, 5416484, 10832968, 21665936]

約数ペア:

[(1, 21665936), (2, 10832968), (4, 5416484), (8, 2708242), (16, 1354121), (331, 65456), (662, 32728), (1324, 16364), (2648, 8182), (4091, 5296)]