20329520

素因数分解:

$2^4\times 5^1\times {\mathrm{254119}}^1$

素因数の和:254132

約数の個数: 20

約数和(自身を含む): 47266320

約数和(自身を除く): 26936800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254119, 508238, 1016476, 1270595, 2032952, 2541190, 4065904, 5082380, 10164760, 20329520]

約数ペア:

[(1, 20329520), (2, 10164760), (4, 5082380), (5, 4065904), (8, 2541190), (10, 2032952), (16, 1270595), (20, 1016476), (40, 508238), (80, 254119)]