21307550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2039}}^1$

素因数の和:2081

約数の個数: 48

約数和(自身を含む): 45532800

約数和(自身を除く): 24225250

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 190, 209, 275, 418, 475, 550, 950, 1045, 2039, 2090, 4078, 5225, 10195, 10450, 20390, 22429, 38741, 44858, 50975, 77482, 101950, 112145, 193705, 224290, 387410, 426151, 560725, 852302, 968525, 1121450, 1937050, 2130755, 4261510, 10653775, 21307550]

約数ペア:

[(1, 21307550), (2, 10653775), (5, 4261510), (10, 2130755), (11, 1937050), (19, 1121450), (22, 968525), (25, 852302), (38, 560725), (50, 426151), (55, 387410), (95, 224290), (110, 193705), (190, 112145), (209, 101950), (275, 77482), (418, 50975), (475, 44858), (550, 38741), (950, 22429), (1045, 20390), (2039, 10450), (2090, 10195), (4078, 5225)]