128804500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{2129}}^1$

素因数の和:2170

約数の個数: 72

約数和(自身を含む): 309352680

約数和(自身を除く): 180548180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 484, 500, 550, 605, 1100, 1210, 1375, 2129, 2420, 2750, 3025, 4258, 5500, 6050, 8516, 10645, 12100, 15125, 21290, 23419, 30250, 42580, 46838, 53225, 60500, 93676, 106450, 117095, 212900, 234190, 257609, 266125, 468380, 515218, 532250, 585475, 1030436, 1064500, 1170950, 1288045, 2341900, 2576090, 2927375, 5152180, 5854750, 6440225, 11709500, 12880450, 25760900, 32201125, 64402250, 128804500]

約数ペア:

[(1, 128804500), (2, 64402250), (4, 32201125), (5, 25760900), (10, 12880450), (11, 11709500), (20, 6440225), (22, 5854750), (25, 5152180), (44, 2927375), (50, 2576090), (55, 2341900), (100, 1288045), (110, 1170950), (121, 1064500), (125, 1030436), (220, 585475), (242, 532250), (250, 515218), (275, 468380), (484, 266125), (500, 257609), (550, 234190), (605, 212900), (1100, 117095), (1210, 106450), (1375, 93676), (2129, 60500), (2420, 53225), (2750, 46838), (3025, 42580), (4258, 30250), (5500, 23419), (6050, 21290), (8516, 15125), (10645, 12100)]