1388986280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3156787}}^1$

素因数の和:3156809

約数の個数: 32

約数和(自身を含む): 3409331040

約数和(自身を除く): 2020344760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 3156787, 6313574, 12627148, 15783935, 25254296, 31567870, 34724657, 63135740, 69449314, 126271480, 138898628, 173623285, 277797256, 347246570, 694493140, 1388986280]

約数ペア:

[(1, 1388986280), (2, 694493140), (4, 347246570), (5, 277797256), (8, 173623285), (10, 138898628), (11, 126271480), (20, 69449314), (22, 63135740), (40, 34724657), (44, 31567870), (55, 25254296), (88, 15783935), (110, 12627148), (220, 6313574), (440, 3156787)]