21076275

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{433}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 17671245

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 59, 75, 165, 177, 275, 295, 433, 649, 825, 885, 1299, 1475, 1947, 2165, 3245, 4425, 4763, 6495, 9735, 10825, 14289, 16225, 23815, 25547, 32475, 48675, 71445, 76641, 119075, 127735, 281017, 357225, 383205, 638675, 843051, 1405085, 1916025, 4215255, 7025425, 21076275]

約数ペア:

[(1, 21076275), (3, 7025425), (5, 4215255), (11, 1916025), (15, 1405085), (25, 843051), (33, 638675), (55, 383205), (59, 357225), (75, 281017), (165, 127735), (177, 119075), (275, 76641), (295, 71445), (433, 48675), (649, 32475), (825, 25547), (885, 23815), (1299, 16225), (1475, 14289), (1947, 10825), (2165, 9735), (3245, 6495), (4425, 4763)]