661125

素因数分解:

$3^1\times 5^3\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 32

約数和(自身を含む): 1153152

約数和(自身を除く): 492027

約数列:

[1, 3, 5, 15, 25, 41, 43, 75, 123, 125, 129, 205, 215, 375, 615, 645, 1025, 1075, 1763, 3075, 3225, 5125, 5289, 5375, 8815, 15375, 16125, 26445, 44075, 132225, 220375, 661125]

約数ペア:

[(1, 661125), (3, 220375), (5, 132225), (15, 44075), (25, 26445), (41, 16125), (43, 15375), (75, 8815), (123, 5375), (125, 5289), (129, 5125), (205, 3225), (215, 3075), (375, 1763), (615, 1075), (645, 1025)]