20806443

素因数分解:

$3^3\times 7^1\times {\mathrm{283}}^1\times {\mathrm{389}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 35443200

約数和(自身を除く): 14636757

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 283, 389, 849, 1167, 1981, 2547, 2723, 3501, 5943, 7641, 8169, 10503, 17829, 24507, 53487, 73521, 110087, 330261, 770609, 990783, 2311827, 2972349, 6935481, 20806443]

約数ペア:

[(1, 20806443), (3, 6935481), (7, 2972349), (9, 2311827), (21, 990783), (27, 770609), (63, 330261), (189, 110087), (283, 73521), (389, 53487), (849, 24507), (1167, 17829), (1981, 10503), (2547, 8169), (2723, 7641), (3501, 5943)]