19646240

素因数分解:

$2^5\times 5^1\times {\mathrm{122789}}^1$

素因数の和:122804

約数の個数: 24

約数和(自身を含む): 46414620

約数和(自身を除く): 26768380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 122789, 245578, 491156, 613945, 982312, 1227890, 1964624, 2455780, 3929248, 4911560, 9823120, 19646240]

約数ペア:

[(1, 19646240), (2, 9823120), (4, 4911560), (5, 3929248), (8, 2455780), (10, 1964624), (16, 1227890), (20, 982312), (32, 613945), (40, 491156), (80, 245578), (160, 122789)]