1398376985

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{209809}}^1$

素因数の和:209888

約数の個数: 16

約数和(自身を含む): 1772474880

約数和(自身を除く): 374097895

約数列:

[1, 5, 31, 43, 155, 215, 1333, 6665, 209809, 1049045, 6504079, 9021787, 32520395, 45108935, 279675397, 1398376985]

約数ペア:

[(1, 1398376985), (5, 279675397), (31, 45108935), (43, 32520395), (155, 9021787), (215, 6504079), (1333, 1049045), (6665, 209809)]