21977175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1567}}^1$

素因数の和:1608

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 20020137

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1567, 2805, 4675, 4701, 7835, 14025, 17237, 23505, 26639, 39175, 51711, 79917, 86185, 117525, 133195, 258555, 293029, 399585, 430925, 665975, 879087, 1292775, 1465145, 1997925, 4395435, 7325725, 21977175]

約数ペア:

[(1, 21977175), (3, 7325725), (5, 4395435), (11, 1997925), (15, 1465145), (17, 1292775), (25, 879087), (33, 665975), (51, 430925), (55, 399585), (75, 293029), (85, 258555), (165, 133195), (187, 117525), (255, 86185), (275, 79917), (425, 51711), (561, 39175), (825, 26639), (935, 23505), (1275, 17237), (1567, 14025), (2805, 7835), (4675, 4701)]