1611620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1321}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 3442488

約数和(自身を除く): 1830868

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1321, 2642, 5284, 6605, 13210, 26420, 80581, 161162, 322324, 402905, 805810, 1611620]

約数ペア:

[(1, 1611620), (2, 805810), (4, 402905), (5, 322324), (10, 161162), (20, 80581), (61, 26420), (122, 13210), (244, 6605), (305, 5284), (610, 2642), (1220, 1321)]