21921868

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{173}}^1\times {\mathrm{401}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 39170880

約数和(自身を除く): 17249012

約数列:

[1, 2, 4, 79, 158, 173, 316, 346, 401, 692, 802, 1604, 13667, 27334, 31679, 54668, 63358, 69373, 126716, 138746, 277492, 5480467, 10960934, 21921868]

約数ペア:

[(1, 21921868), (2, 10960934), (4, 5480467), (79, 277492), (158, 138746), (173, 126716), (316, 69373), (346, 63358), (401, 54668), (692, 31679), (802, 27334), (1604, 13667)]