397215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:128

約数の個数: 48

約数和(自身を含む): 856128

約数和(自身を除く): 458913

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 97, 105, 117, 195, 273, 291, 315, 455, 485, 585, 679, 819, 873, 1261, 1365, 1455, 2037, 3395, 3783, 4095, 4365, 6111, 6305, 8827, 10185, 11349, 18915, 26481, 30555, 44135, 56745, 79443, 132405, 397215]

約数ペア:

[(1, 397215), (3, 132405), (5, 79443), (7, 56745), (9, 44135), (13, 30555), (15, 26481), (21, 18915), (35, 11349), (39, 10185), (45, 8827), (63, 6305), (65, 6111), (91, 4365), (97, 4095), (105, 3783), (117, 3395), (195, 2037), (273, 1455), (291, 1365), (315, 1261), (455, 873), (485, 819), (585, 679)]