21957776

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20483}}^1$

素因数の和:20558

約数の個数: 20

約数和(自身を含む): 43180272

約数和(自身を除く): 21222496

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20483, 40966, 81932, 163864, 327728, 1372361, 2744722, 5489444, 10978888, 21957776]

約数ペア:

[(1, 21957776), (2, 10978888), (4, 5489444), (8, 2744722), (16, 1372361), (67, 327728), (134, 163864), (268, 81932), (536, 40966), (1072, 20483)]