21000921615

素因数分解:

$3^2\times 5^1\times {\mathrm{3307}}^1\times {\mathrm{141121}}^1$

素因数の和:144439

約数の個数: 24

約数和(自身を含む): 36412862928

約数和(自身を除く): 15411941313

約数列:

[1, 3, 5, 9, 15, 45, 3307, 9921, 16535, 29763, 49605, 141121, 148815, 423363, 705605, 1270089, 2116815, 6350445, 466687147, 1400061441, 2333435735, 4200184323, 7000307205, 21000921615]

約数ペア:

[(1, 21000921615), (3, 7000307205), (5, 4200184323), (9, 2333435735), (15, 1400061441), (45, 466687147), (3307, 6350445), (9921, 2116815), (16535, 1270089), (29763, 705605), (49605, 423363), (141121, 148815)]