21394120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48623}}^1$

素因数の和:48645

約数の個数: 32

約数和(自身を含む): 52513920

約数和(自身を除く): 31119800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48623, 97246, 194492, 243115, 388984, 486230, 534853, 972460, 1069706, 1944920, 2139412, 2674265, 4278824, 5348530, 10697060, 21394120]

約数ペア:

[(1, 21394120), (2, 10697060), (4, 5348530), (5, 4278824), (8, 2674265), (10, 2139412), (11, 1944920), (20, 1069706), (22, 972460), (40, 534853), (44, 486230), (55, 388984), (88, 243115), (110, 194492), (220, 97246), (440, 48623)]