80938760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289067}}^1$

素因数の和:289085

約数の個数: 32

約数和(自身を含む): 208128960

約数和(自身を除く): 127190200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289067, 578134, 1156268, 1445335, 2023469, 2312536, 2890670, 4046938, 5781340, 8093876, 10117345, 11562680, 16187752, 20234690, 40469380, 80938760]

約数ペア:

[(1, 80938760), (2, 40469380), (4, 20234690), (5, 16187752), (7, 11562680), (8, 10117345), (10, 8093876), (14, 5781340), (20, 4046938), (28, 2890670), (35, 2312536), (40, 2023469), (56, 1445335), (70, 1156268), (140, 578134), (280, 289067)]