21739575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2027}}^1$

素因数の和:2064

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 20507721

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 143, 165, 195, 275, 325, 429, 715, 825, 975, 2027, 2145, 3575, 6081, 10135, 10725, 22297, 26351, 30405, 50675, 66891, 79053, 111485, 131755, 152025, 289861, 334455, 395265, 557425, 658775, 869583, 1449305, 1672275, 1976325, 4347915, 7246525, 21739575]

約数ペア:

[(1, 21739575), (3, 7246525), (5, 4347915), (11, 1976325), (13, 1672275), (15, 1449305), (25, 869583), (33, 658775), (39, 557425), (55, 395265), (65, 334455), (75, 289861), (143, 152025), (165, 131755), (195, 111485), (275, 79053), (325, 66891), (429, 50675), (715, 30405), (825, 26351), (975, 22297), (2027, 10725), (2145, 10135), (3575, 6081)]