21901906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{17923}}^1$

素因数の和:17985

約数の個数: 16

約数和(自身を含む): 36134784

約数和(自身を除く): 14232878

約数列:

[1, 2, 13, 26, 47, 94, 611, 1222, 17923, 35846, 232999, 465998, 842381, 1684762, 10950953, 21901906]

約数ペア:

[(1, 21901906), (2, 10950953), (13, 1684762), (26, 842381), (47, 465998), (94, 232999), (611, 35846), (1222, 17923)]