19927750

素因数分解:

$2^1\times 5^3\times {\mathrm{79}}^1\times {\mathrm{1009}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 37814400

約数和(自身を除く): 17886650

約数列:

[1, 2, 5, 10, 25, 50, 79, 125, 158, 250, 395, 790, 1009, 1975, 2018, 3950, 5045, 9875, 10090, 19750, 25225, 50450, 79711, 126125, 159422, 252250, 398555, 797110, 1992775, 3985550, 9963875, 19927750]

約数ペア:

[(1, 19927750), (2, 9963875), (5, 3985550), (10, 1992775), (25, 797110), (50, 398555), (79, 252250), (125, 159422), (158, 126125), (250, 79711), (395, 50450), (790, 25225), (1009, 19750), (1975, 10090), (2018, 9875), (3950, 5045)]