21554500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3919}}^1$

素因数の和:3949

約数の個数: 48

約数和(自身を含む): 51367680

約数和(自身を除く): 29813180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3919, 5500, 7838, 15676, 19595, 39190, 43109, 78380, 86218, 97975, 172436, 195950, 215545, 391900, 431090, 489875, 862180, 979750, 1077725, 1959500, 2155450, 4310900, 5388625, 10777250, 21554500]

約数ペア:

[(1, 21554500), (2, 10777250), (4, 5388625), (5, 4310900), (10, 2155450), (11, 1959500), (20, 1077725), (22, 979750), (25, 862180), (44, 489875), (50, 431090), (55, 391900), (100, 215545), (110, 195950), (125, 172436), (220, 97975), (250, 86218), (275, 78380), (500, 43109), (550, 39190), (1100, 19595), (1375, 15676), (2750, 7838), (3919, 5500)]