21055965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1579}}^1$

素因数の和:1721

約数の個数: 32

約数和(自身を含む): 38830080

約数和(自身を除く): 17774115

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 127, 381, 635, 889, 1579, 1905, 2667, 4445, 4737, 7895, 11053, 13335, 23685, 33159, 55265, 165795, 200533, 601599, 1002665, 1403731, 3007995, 4211193, 7018655, 21055965]

約数ペア:

[(1, 21055965), (3, 7018655), (5, 4211193), (7, 3007995), (15, 1403731), (21, 1002665), (35, 601599), (105, 200533), (127, 165795), (381, 55265), (635, 33159), (889, 23685), (1579, 13335), (1905, 11053), (2667, 7895), (4445, 4737)]