1289560

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 2939040

約数和(自身を除く): 1649480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 313, 412, 515, 626, 824, 1030, 1252, 1565, 2060, 2504, 3130, 4120, 6260, 12520, 32239, 64478, 128956, 161195, 257912, 322390, 644780, 1289560]

約数ペア:

[(1, 1289560), (2, 644780), (4, 322390), (5, 257912), (8, 161195), (10, 128956), (20, 64478), (40, 32239), (103, 12520), (206, 6260), (313, 4120), (412, 3130), (515, 2504), (626, 2060), (824, 1565), (1030, 1252)]