30981968

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{21757}}^1$

素因数の和:21854

約数の個数: 20

約数和(自身を含む): 60704820

約数和(自身を除く): 29722852

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 21757, 43514, 87028, 174056, 348112, 1936373, 3872746, 7745492, 15490984, 30981968]

約数ペア:

[(1, 30981968), (2, 15490984), (4, 7745492), (8, 3872746), (16, 1936373), (89, 348112), (178, 174056), (356, 87028), (712, 43514), (1424, 21757)]