21294923

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{997}}^1$

素因数の和:1094

約数の個数: 16

約数和(自身を含む): 24143616

約数和(自身を除く): 2848693

約数列:

[1, 13, 31, 53, 403, 689, 997, 1643, 12961, 21359, 30907, 52841, 401791, 686933, 1638071, 21294923]

約数ペア:

[(1, 21294923), (13, 1638071), (31, 686933), (53, 401791), (403, 52841), (689, 30907), (997, 21359), (1643, 12961)]