81724905

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{25579}}^1$

素因数の和:25661

約数の個数: 24

約数和(自身を含む): 143657280

約数和(自身を除く): 61932375

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 25579, 76737, 127895, 230211, 383685, 1151055, 1816109, 5448327, 9080545, 16344981, 27241635, 81724905]

約数ペア:

[(1, 81724905), (3, 27241635), (5, 16344981), (9, 9080545), (15, 5448327), (45, 1816109), (71, 1151055), (213, 383685), (355, 230211), (639, 127895), (1065, 76737), (3195, 25579)]