18808120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1627}}^1$

素因数の和:1672

約数の個数: 48

約数和(自身を含む): 44981640

約数和(自身を除く): 26173520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1627, 2312, 2890, 3254, 5780, 6508, 8135, 11560, 13016, 16270, 27659, 32540, 55318, 65080, 110636, 138295, 221272, 276590, 470203, 553180, 940406, 1106360, 1880812, 2351015, 3761624, 4702030, 9404060, 18808120]

約数ペア:

[(1, 18808120), (2, 9404060), (4, 4702030), (5, 3761624), (8, 2351015), (10, 1880812), (17, 1106360), (20, 940406), (34, 553180), (40, 470203), (68, 276590), (85, 221272), (136, 138295), (170, 110636), (289, 65080), (340, 55318), (578, 32540), (680, 27659), (1156, 16270), (1445, 13016), (1627, 11560), (2312, 8135), (2890, 6508), (3254, 5780)]