19557369

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 32532864

約数和(自身を除く): 12975495

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 151, 243, 351, 369, 453, 533, 1053, 1107, 1359, 1599, 1963, 3159, 3321, 4077, 4797, 5889, 6191, 9963, 12231, 14391, 17667, 18573, 36693, 43173, 53001, 55719, 80483, 129519, 159003, 167157, 241449, 477009, 501471, 724347, 1504413, 2173041, 6519123, 19557369]

約数ペア:

[(1, 19557369), (3, 6519123), (9, 2173041), (13, 1504413), (27, 724347), (39, 501471), (41, 477009), (81, 241449), (117, 167157), (123, 159003), (151, 129519), (243, 80483), (351, 55719), (369, 53001), (453, 43173), (533, 36693), (1053, 18573), (1107, 17667), (1359, 14391), (1599, 12231), (1963, 9963), (3159, 6191), (3321, 5889), (4077, 4797)]