19561581

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{1429}}^1$

素因数の和:1467

約数の個数: 30

約数和(自身を含む): 31664490

約数和(自身を除く): 12102909

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 351, 507, 1053, 1429, 1521, 4287, 4563, 12861, 13689, 18577, 38583, 55731, 115749, 167193, 241501, 501579, 724503, 1504737, 2173509, 6520527, 19561581]

約数ペア:

[(1, 19561581), (3, 6520527), (9, 2173509), (13, 1504737), (27, 724503), (39, 501579), (81, 241501), (117, 167193), (169, 115749), (351, 55731), (507, 38583), (1053, 18577), (1429, 13689), (1521, 12861), (4287, 4563)]