21891982

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{23339}}^1$

素因数の和:23415

約数の個数: 16

約数和(自身を含む): 38090880

約数和(自身を除く): 16198898

約数列:

[1, 2, 7, 14, 67, 134, 469, 938, 23339, 46678, 163373, 326746, 1563713, 3127426, 10945991, 21891982]

約数ペア:

[(1, 21891982), (2, 10945991), (7, 3127426), (14, 1563713), (67, 326746), (134, 163373), (469, 46678), (938, 23339)]