81964016

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{57559}}^1$

素因数の和:57656

約数の個数: 20

約数和(自身を含む): 160592400

約数和(自身を除く): 78628384

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 57559, 115118, 230236, 460472, 920944, 5122751, 10245502, 20491004, 40982008, 81964016]

約数ペア:

[(1, 81964016), (2, 40982008), (4, 20491004), (8, 10245502), (16, 5122751), (89, 920944), (178, 460472), (356, 230236), (712, 115118), (1424, 57559)]