278340440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{994073}}^1$

素因数の和:994091

約数の個数: 32

約数和(自身を含む): 715733280

約数和(自身を除く): 437392840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 994073, 1988146, 3976292, 4970365, 6958511, 7952584, 9940730, 13917022, 19881460, 27834044, 34792555, 39762920, 55668088, 69585110, 139170220, 278340440]

約数ペア:

[(1, 278340440), (2, 139170220), (4, 69585110), (5, 55668088), (7, 39762920), (8, 34792555), (10, 27834044), (14, 19881460), (20, 13917022), (28, 9940730), (35, 7952584), (40, 6958511), (56, 4970365), (70, 3976292), (140, 1988146), (280, 994073)]