21310575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1987}}^1$

素因数の和:2024

約数の個数: 48

約数和(自身を含む): 41414016

約数和(自身を除く): 20103441

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 143, 165, 195, 275, 325, 429, 715, 825, 975, 1987, 2145, 3575, 5961, 9935, 10725, 21857, 25831, 29805, 49675, 65571, 77493, 109285, 129155, 149025, 284141, 327855, 387465, 546425, 645775, 852423, 1420705, 1639275, 1937325, 4262115, 7103525, 21310575]

約数ペア:

[(1, 21310575), (3, 7103525), (5, 4262115), (11, 1937325), (13, 1639275), (15, 1420705), (25, 852423), (33, 645775), (39, 546425), (55, 387465), (65, 327855), (75, 284141), (143, 149025), (165, 129155), (195, 109285), (275, 77493), (325, 65571), (429, 49675), (715, 29805), (825, 25831), (975, 21857), (1987, 10725), (2145, 9935), (3575, 5961)]