19486240

素因数分解:

$2^5\times 5^1\times {\mathrm{121789}}^1$

素因数の和:121804

約数の個数: 24

約数和(自身を含む): 46036620

約数和(自身を除く): 26550380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 121789, 243578, 487156, 608945, 974312, 1217890, 1948624, 2435780, 3897248, 4871560, 9743120, 19486240]

約数ペア:

[(1, 19486240), (2, 9743120), (4, 4871560), (5, 3897248), (8, 2435780), (10, 1948624), (16, 1217890), (20, 974312), (32, 608945), (40, 487156), (80, 243578), (160, 121789)]