21246004

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{593}}^1$

素因数の和:676

約数の個数: 36

約数和(自身を含む): 41089356

約数和(自身を除く): 19843352

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 169, 212, 338, 593, 676, 689, 1186, 1378, 2372, 2756, 7709, 8957, 15418, 17914, 30836, 31429, 35828, 62858, 100217, 125716, 200434, 400868, 408577, 817154, 1634308, 5311501, 10623002, 21246004]

約数ペア:

[(1, 21246004), (2, 10623002), (4, 5311501), (13, 1634308), (26, 817154), (52, 408577), (53, 400868), (106, 200434), (169, 125716), (212, 100217), (338, 62858), (593, 35828), (676, 31429), (689, 30836), (1186, 17914), (1378, 15418), (2372, 8957), (2756, 7709)]