20729331

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1637}}^1$

素因数の和:1720

約数の個数: 32

約数和(自身を含む): 35642880

約数和(自身を除く): 14913549

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 189, 201, 469, 603, 1407, 1637, 1809, 4221, 4911, 11459, 12663, 14733, 34377, 44199, 103131, 109679, 309393, 329037, 767753, 987111, 2303259, 2961333, 6909777, 20729331]

約数ペア:

[(1, 20729331), (3, 6909777), (7, 2961333), (9, 2303259), (21, 987111), (27, 767753), (63, 329037), (67, 309393), (189, 109679), (201, 103131), (469, 44199), (603, 34377), (1407, 14733), (1637, 12663), (1809, 11459), (4221, 4911)]