21384675

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2437}}^1$

素因数の和:2469

約数の個数: 48

約数和(自身を含む): 42323680

約数和(自身を除く): 20939005

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 195, 225, 325, 351, 585, 675, 975, 1755, 2437, 2925, 7311, 8775, 12185, 21933, 31681, 36555, 60925, 65799, 95043, 109665, 158405, 182775, 285129, 328995, 475215, 548325, 792025, 855387, 1425645, 1644975, 2376075, 4276935, 7128225, 21384675]

約数ペア:

[(1, 21384675), (3, 7128225), (5, 4276935), (9, 2376075), (13, 1644975), (15, 1425645), (25, 855387), (27, 792025), (39, 548325), (45, 475215), (65, 328995), (75, 285129), (117, 182775), (135, 158405), (195, 109665), (225, 95043), (325, 65799), (351, 60925), (585, 36555), (675, 31681), (975, 21933), (1755, 12185), (2437, 8775), (2925, 7311)]