721480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1061}}^1$

素因数の和:1089

約数の個数: 32

約数和(自身を含む): 1720440

約数和(自身を除く): 998960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 1061, 2122, 4244, 5305, 8488, 10610, 18037, 21220, 36074, 42440, 72148, 90185, 144296, 180370, 360740, 721480]

約数ペア:

[(1, 721480), (2, 360740), (4, 180370), (5, 144296), (8, 90185), (10, 72148), (17, 42440), (20, 36074), (34, 21220), (40, 18037), (68, 10610), (85, 8488), (136, 5305), (170, 4244), (340, 2122), (680, 1061)]