28381640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101363}}^1$

素因数の和:101381

約数の個数: 32

約数和(自身を含む): 72982080

約数和(自身を除く): 44600440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 101363, 202726, 405452, 506815, 709541, 810904, 1013630, 1419082, 2027260, 2838164, 3547705, 4054520, 5676328, 7095410, 14190820, 28381640]

約数ペア:

[(1, 28381640), (2, 14190820), (4, 7095410), (5, 5676328), (7, 4054520), (8, 3547705), (10, 2838164), (14, 2027260), (20, 1419082), (28, 1013630), (35, 810904), (40, 709541), (56, 506815), (70, 405452), (140, 202726), (280, 101363)]