21907834

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{2011}}^1$

素因数の和:2445

約数の個数: 16

約数和(自身を含む): 35491680

約数和(自身を除く): 13583846

約数列:

[1, 2, 13, 26, 419, 838, 2011, 4022, 5447, 10894, 26143, 52286, 842609, 1685218, 10953917, 21907834]

約数ペア:

[(1, 21907834), (2, 10953917), (13, 1685218), (26, 842609), (419, 52286), (838, 26143), (2011, 10894), (4022, 5447)]