1640555427

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{272201}}^1$

素因数の和:272259

約数の個数: 24

約数和(自身を含む): 2606606352

約数和(自身を除く): 966050925

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 6027, 272201, 816603, 1905407, 5716221, 11160241, 13337849, 33480723, 40013547, 78121687, 234365061, 546851809, 1640555427]

約数ペア:

[(1, 1640555427), (3, 546851809), (7, 234365061), (21, 78121687), (41, 40013547), (49, 33480723), (123, 13337849), (147, 11160241), (287, 5716221), (861, 1905407), (2009, 816603), (6027, 272201)]