21148900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{11131}}^1$

素因数の和:11164

約数の個数: 36

約数和(自身を含む): 48312880

約数和(自身を除く): 27163980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 11131, 22262, 44524, 55655, 111310, 211489, 222620, 278275, 422978, 556550, 845956, 1057445, 1113100, 2114890, 4229780, 5287225, 10574450, 21148900]

約数ペア:

[(1, 21148900), (2, 10574450), (4, 5287225), (5, 4229780), (10, 2114890), (19, 1113100), (20, 1057445), (25, 845956), (38, 556550), (50, 422978), (76, 278275), (95, 222620), (100, 211489), (190, 111310), (380, 55655), (475, 44524), (950, 22262), (1900, 11131)]