9975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1$

素因数の和:39

約数の個数: 24

約数和(自身を含む): 19840

約数和(自身を除く): 9865

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325, 9975]

約数ペア:

[(1, 9975), (3, 3325), (5, 1995), (7, 1425), (15, 665), (19, 525), (21, 475), (25, 399), (35, 285), (57, 175), (75, 133), (95, 105)]