21941205

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 42239232

約数和(自身を除く): 20298027

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 53, 55, 65, 143, 159, 165, 193, 195, 265, 429, 579, 583, 689, 715, 795, 965, 1749, 2067, 2123, 2145, 2509, 2895, 2915, 3445, 6369, 7527, 7579, 8745, 10229, 10335, 10615, 12545, 22737, 27599, 30687, 31845, 37635, 37895, 51145, 82797, 112519, 113685, 132977, 137995, 153435, 337557, 398931, 413985, 562595, 664885, 1462747, 1687785, 1994655, 4388241, 7313735, 21941205]

約数ペア:

[(1, 21941205), (3, 7313735), (5, 4388241), (11, 1994655), (13, 1687785), (15, 1462747), (33, 664885), (39, 562595), (53, 413985), (55, 398931), (65, 337557), (143, 153435), (159, 137995), (165, 132977), (193, 113685), (195, 112519), (265, 82797), (429, 51145), (579, 37895), (583, 37635), (689, 31845), (715, 30687), (795, 27599), (965, 22737), (1749, 12545), (2067, 10615), (2123, 10335), (2145, 10229), (2509, 8745), (2895, 7579), (2915, 7527), (3445, 6369)]