20157780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2417}}^1$

素因数の和:2568

約数の個数: 48

約数和(自身を含む): 56871360

約数和(自身を除く): 36713580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2417, 2780, 4170, 4834, 7251, 8340, 9668, 12085, 14502, 24170, 29004, 36255, 48340, 72510, 145020, 335963, 671926, 1007889, 1343852, 1679815, 2015778, 3359630, 4031556, 5039445, 6719260, 10078890, 20157780]

約数ペア:

[(1, 20157780), (2, 10078890), (3, 6719260), (4, 5039445), (5, 4031556), (6, 3359630), (10, 2015778), (12, 1679815), (15, 1343852), (20, 1007889), (30, 671926), (60, 335963), (139, 145020), (278, 72510), (417, 48340), (556, 36255), (695, 29004), (834, 24170), (1390, 14502), (1668, 12085), (2085, 9668), (2417, 8340), (2780, 7251), (4170, 4834)]