19913440

素因数分解:

$2^5\times 5^1\times {\mathrm{124459}}^1$

素因数の和:124474

約数の個数: 24

約数和(自身を含む): 47045880

約数和(自身を除く): 27132440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124459, 248918, 497836, 622295, 995672, 1244590, 1991344, 2489180, 3982688, 4978360, 9956720, 19913440]

約数ペア:

[(1, 19913440), (2, 9956720), (4, 4978360), (5, 3982688), (8, 2489180), (10, 1991344), (16, 1244590), (20, 995672), (32, 622295), (40, 497836), (80, 248918), (160, 124459)]