21662810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2347}}^1$

素因数の和:2438

約数の個数: 32

約数和(自身を含む): 42602112

約数和(自身を除く): 20939302

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2347, 4615, 4694, 9230, 11735, 23470, 30511, 61022, 152555, 166637, 305110, 333274, 833185, 1666370, 2166281, 4332562, 10831405, 21662810]

約数ペア:

[(1, 21662810), (2, 10831405), (5, 4332562), (10, 2166281), (13, 1666370), (26, 833185), (65, 333274), (71, 305110), (130, 166637), (142, 152555), (355, 61022), (710, 30511), (923, 23470), (1846, 11735), (2347, 9230), (4615, 4694)]