21475221

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:708

約数の個数: 16

約数和(自身を含む): 29160000

約数和(自身を除く): 7684779

約数列:

[1, 3, 107, 149, 321, 447, 449, 1347, 15943, 47829, 48043, 66901, 144129, 200703, 7158407, 21475221]

約数ペア:

[(1, 21475221), (3, 7158407), (107, 200703), (149, 144129), (321, 66901), (447, 48043), (449, 47829), (1347, 15943)]