21287730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2969}}^1$

素因数の和:3218

約数の個数: 32

約数和(自身を含む): 51321600

約数和(自身を除く): 30033870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 239, 478, 717, 1195, 1434, 2390, 2969, 3585, 5938, 7170, 8907, 14845, 17814, 29690, 44535, 89070, 709591, 1419182, 2128773, 3547955, 4257546, 7095910, 10643865, 21287730]

約数ペア:

[(1, 21287730), (2, 10643865), (3, 7095910), (5, 4257546), (6, 3547955), (10, 2128773), (15, 1419182), (30, 709591), (239, 89070), (478, 44535), (717, 29690), (1195, 17814), (1434, 14845), (2390, 8907), (2969, 7170), (3585, 5938)]