2857855

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:607

約数の個数: 32

約数和(自身を含む): 4612608

約数和(自身を除く): 1754753

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 571, 715, 1001, 2855, 3997, 5005, 6281, 7423, 19985, 31405, 37115, 43967, 51961, 81653, 219835, 259805, 408265, 571571, 2857855]

約数ペア:

[(1, 2857855), (5, 571571), (7, 408265), (11, 259805), (13, 219835), (35, 81653), (55, 51961), (65, 43967), (77, 37115), (91, 31405), (143, 19985), (385, 7423), (455, 6281), (571, 5005), (715, 3997), (1001, 2855)]