2800840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1429}}^1$

素因数の和:1454

約数の個数: 48

約数和(自身を含む): 7335900

約数和(自身を除く): 4535060

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1429, 1960, 2858, 5716, 7145, 10003, 11432, 14290, 20006, 28580, 40012, 50015, 57160, 70021, 80024, 100030, 140042, 200060, 280084, 350105, 400120, 560168, 700210, 1400420, 2800840]

約数ペア:

[(1, 2800840), (2, 1400420), (4, 700210), (5, 560168), (7, 400120), (8, 350105), (10, 280084), (14, 200060), (20, 140042), (28, 100030), (35, 80024), (40, 70021), (49, 57160), (56, 50015), (70, 40012), (98, 28580), (140, 20006), (196, 14290), (245, 11432), (280, 10003), (392, 7145), (490, 5716), (980, 2858), (1429, 1960)]