19642455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 39297024

約数和(自身を除く): 19654569

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 127, 315, 381, 491, 635, 889, 1143, 1473, 1905, 2455, 2667, 3437, 4419, 4445, 5715, 7365, 8001, 10311, 13335, 17185, 22095, 30933, 40005, 51555, 62357, 154665, 187071, 311785, 436499, 561213, 935355, 1309497, 2182495, 2806065, 3928491, 6547485, 19642455]

約数ペア:

[(1, 19642455), (3, 6547485), (5, 3928491), (7, 2806065), (9, 2182495), (15, 1309497), (21, 935355), (35, 561213), (45, 436499), (63, 311785), (105, 187071), (127, 154665), (315, 62357), (381, 51555), (491, 40005), (635, 30933), (889, 22095), (1143, 17185), (1473, 13335), (1905, 10311), (2455, 8001), (2667, 7365), (3437, 5715), (4419, 4445)]