21302125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{13109}}^1$

素因数の和:13137

約数の個数: 16

約数和(自身を含む): 28632240

約数和(自身を除く): 7330115

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 13109, 65545, 170417, 327725, 852085, 1638625, 4260425, 21302125]

約数ペア:

[(1, 21302125), (5, 4260425), (13, 1638625), (25, 852085), (65, 327725), (125, 170417), (325, 65545), (1625, 13109)]