138090820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{140909}}^1$

素因数の和:140932

約数の個数: 36

約数和(自身を含む): 337338540

約数和(自身を除く): 199247720

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 140909, 281818, 563636, 704545, 986363, 1409090, 1972726, 2818180, 3945452, 4931815, 6904541, 9863630, 13809082, 19727260, 27618164, 34522705, 69045410, 138090820]

約数ペア:

[(1, 138090820), (2, 69045410), (4, 34522705), (5, 27618164), (7, 19727260), (10, 13809082), (14, 9863630), (20, 6904541), (28, 4931815), (35, 3945452), (49, 2818180), (70, 1972726), (98, 1409090), (140, 986363), (196, 704545), (245, 563636), (490, 281818), (980, 140909)]