21664604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9689}}^1$

素因数の和:9749

約数の個数: 24

約数和(自身を含む): 41783280

約数和(自身を除く): 20118676

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9689, 19378, 38756, 125957, 251914, 416627, 503828, 833254, 1666508, 5416151, 10832302, 21664604]

約数ペア:

[(1, 21664604), (2, 10832302), (4, 5416151), (13, 1666508), (26, 833254), (43, 503828), (52, 416627), (86, 251914), (172, 125957), (559, 38756), (1118, 19378), (2236, 9689)]