201997215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{641261}}^1$

素因数の和:641279

約数の個数: 24

約数和(自身を含む): 400147488

約数和(自身を除く): 198150273

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 641261, 1923783, 3206305, 4488827, 5771349, 9618915, 13466481, 22444135, 28856745, 40399443, 67332405, 201997215]

約数ペア:

[(1, 201997215), (3, 67332405), (5, 40399443), (7, 28856745), (9, 22444135), (15, 13466481), (21, 9618915), (35, 5771349), (45, 4488827), (63, 3206305), (105, 1923783), (315, 641261)]