217187415

素因数分解:

$3^2\times 5^1\times {\mathrm{1523}}^1\times {\mathrm{3169}}^1$

素因数の和:4703

約数の個数: 24

約数和(自身を含む): 376824240

約数和(自身を除く): 159636825

約数列:

[1, 3, 5, 9, 15, 45, 1523, 3169, 4569, 7615, 9507, 13707, 15845, 22845, 28521, 47535, 68535, 142605, 4826387, 14479161, 24131935, 43437483, 72395805, 217187415]

約数ペア:

[(1, 217187415), (3, 72395805), (5, 43437483), (9, 24131935), (15, 14479161), (45, 4826387), (1523, 142605), (3169, 68535), (4569, 47535), (7615, 28521), (9507, 22845), (13707, 15845)]