31684815

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 57148416

約数和(自身を除く): 25463601

約数列:

[1, 3, 5, 9, 15, 45, 47, 71, 141, 211, 213, 235, 355, 423, 633, 639, 705, 1055, 1065, 1899, 2115, 3165, 3195, 3337, 9495, 9917, 10011, 14981, 16685, 29751, 30033, 44943, 49585, 50055, 74905, 89253, 134829, 148755, 150165, 224715, 446265, 674145, 704107, 2112321, 3520535, 6336963, 10561605, 31684815]

約数ペア:

[(1, 31684815), (3, 10561605), (5, 6336963), (9, 3520535), (15, 2112321), (45, 704107), (47, 674145), (71, 446265), (141, 224715), (211, 150165), (213, 148755), (235, 134829), (355, 89253), (423, 74905), (633, 50055), (639, 49585), (705, 44943), (1055, 30033), (1065, 29751), (1899, 16685), (2115, 14981), (3165, 10011), (3195, 9917), (3337, 9495)]