21175947

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{751}}^1$

素因数の和:1011

約数の個数: 24

約数和(自身を含む): 33121088

約数和(自身を除く): 11945141

約数列:

[1, 3, 9, 13, 39, 117, 241, 723, 751, 2169, 2253, 3133, 6759, 9399, 9763, 28197, 29289, 87867, 180991, 542973, 1628919, 2352883, 7058649, 21175947]

約数ペア:

[(1, 21175947), (3, 7058649), (9, 2352883), (13, 1628919), (39, 542973), (117, 180991), (241, 87867), (723, 29289), (751, 28197), (2169, 9763), (2253, 9399), (3133, 6759)]