123226360

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{11987}}^1$

素因数の和:12255

約数の個数: 32

約数和(自身を含む): 278361360

約数和(自身を除く): 155135000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 11987, 23974, 47948, 59935, 95896, 119870, 239740, 479480, 3080659, 6161318, 12322636, 15403295, 24645272, 30806590, 61613180, 123226360]

約数ペア:

[(1, 123226360), (2, 61613180), (4, 30806590), (5, 24645272), (8, 15403295), (10, 12322636), (20, 6161318), (40, 3080659), (257, 479480), (514, 239740), (1028, 119870), (1285, 95896), (2056, 59935), (2570, 47948), (5140, 23974), (10280, 11987)]