21138700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{1747}}^1$

素因数の和:1783

約数の個数: 54

約数和(自身を含む): 50449028

約数和(自身を除く): 29310328

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 220, 242, 275, 484, 550, 605, 1100, 1210, 1747, 2420, 3025, 3494, 6050, 6988, 8735, 12100, 17470, 19217, 34940, 38434, 43675, 76868, 87350, 96085, 174700, 192170, 211387, 384340, 422774, 480425, 845548, 960850, 1056935, 1921700, 2113870, 4227740, 5284675, 10569350, 21138700]

約数ペア:

[(1, 21138700), (2, 10569350), (4, 5284675), (5, 4227740), (10, 2113870), (11, 1921700), (20, 1056935), (22, 960850), (25, 845548), (44, 480425), (50, 422774), (55, 384340), (100, 211387), (110, 192170), (121, 174700), (220, 96085), (242, 87350), (275, 76868), (484, 43675), (550, 38434), (605, 34940), (1100, 19217), (1210, 17470), (1747, 12100), (2420, 8735), (3025, 6988), (3494, 6050)]