21358756

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{263}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 38142720

約数和(自身を除く): 16783964

約数列:

[1, 2, 4, 79, 158, 257, 263, 316, 514, 526, 1028, 1052, 20303, 20777, 40606, 41554, 67591, 81212, 83108, 135182, 270364, 5339689, 10679378, 21358756]

約数ペア:

[(1, 21358756), (2, 10679378), (4, 5339689), (79, 270364), (158, 135182), (257, 83108), (263, 81212), (316, 67591), (514, 41554), (526, 40606), (1028, 20777), (1052, 20303)]