1279152040

素因数分解:

$2^3\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{24809}}^1$

素因数の和:26109

約数の個数: 32

約数和(自身を含む): 2880441000

約数和(自身を除く): 1601288960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1289, 2578, 5156, 6445, 10312, 12890, 24809, 25780, 49618, 51560, 99236, 124045, 198472, 248090, 496180, 992360, 31978801, 63957602, 127915204, 159894005, 255830408, 319788010, 639576020, 1279152040]

約数ペア:

[(1, 1279152040), (2, 639576020), (4, 319788010), (5, 255830408), (8, 159894005), (10, 127915204), (20, 63957602), (40, 31978801), (1289, 992360), (2578, 496180), (5156, 248090), (6445, 198472), (10312, 124045), (12890, 99236), (24809, 51560), (25780, 49618)]