21006784

素因数分解:

$2^6\times {\mathrm{383}}^1\times {\mathrm{857}}^1$

素因数の和:1252

約数の個数: 28

約数和(自身を含む): 41842944

約数和(自身を除く): 20836160

約数列:

[1, 2, 4, 8, 16, 32, 64, 383, 766, 857, 1532, 1714, 3064, 3428, 6128, 6856, 12256, 13712, 24512, 27424, 54848, 328231, 656462, 1312924, 2625848, 5251696, 10503392, 21006784]

約数ペア:

[(1, 21006784), (2, 10503392), (4, 5251696), (8, 2625848), (16, 1312924), (32, 656462), (64, 328231), (383, 54848), (766, 27424), (857, 24512), (1532, 13712), (1714, 12256), (3064, 6856), (3428, 6128)]