20427331900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1229}}^1\times {\mathrm{2341}}^1$

素因数の和:3655

約数の個数: 72

約数和(自身を含む): 45007431840

約数和(自身を除く): 24580099940

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1229, 1420, 1775, 2341, 2458, 3550, 4682, 4916, 6145, 7100, 9364, 11705, 12290, 23410, 24580, 30725, 46820, 58525, 61450, 87259, 117050, 122900, 166211, 174518, 234100, 332422, 349036, 436295, 664844, 831055, 872590, 1662110, 1745180, 2181475, 2877089, 3324220, 4155275, 4362950, 5754178, 8310550, 8725900, 11508356, 14385445, 16621100, 28770890, 57541780, 71927225, 143854450, 204273319, 287708900, 408546638, 817093276, 1021366595, 2042733190, 4085466380, 5106832975, 10213665950, 20427331900]

約数ペア:

[(1, 20427331900), (2, 10213665950), (4, 5106832975), (5, 4085466380), (10, 2042733190), (20, 1021366595), (25, 817093276), (50, 408546638), (71, 287708900), (100, 204273319), (142, 143854450), (284, 71927225), (355, 57541780), (710, 28770890), (1229, 16621100), (1420, 14385445), (1775, 11508356), (2341, 8725900), (2458, 8310550), (3550, 5754178), (4682, 4362950), (4916, 4155275), (6145, 3324220), (7100, 2877089), (9364, 2181475), (11705, 1745180), (12290, 1662110), (23410, 872590), (24580, 831055), (30725, 664844), (46820, 436295), (58525, 349036), (61450, 332422), (87259, 234100), (117050, 174518), (122900, 166211)]