21292275

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{3889}}^1$

素因数の和:3975

約数の個数: 24

約数和(自身を含む): 35694640

約数和(自身を除く): 14402365

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 3889, 5475, 11667, 19445, 58335, 97225, 283897, 291675, 851691, 1419485, 4258455, 7097425, 21292275]

約数ペア:

[(1, 21292275), (3, 7097425), (5, 4258455), (15, 1419485), (25, 851691), (73, 291675), (75, 283897), (219, 97225), (365, 58335), (1095, 19445), (1825, 11667), (3889, 5475)]