18760221

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 29001600

約数和(自身を除く): 10241379

約数列:

[1, 3, 9, 27, 37, 89, 111, 211, 267, 333, 633, 801, 999, 1899, 2403, 3293, 5697, 7807, 9879, 18779, 23421, 29637, 56337, 70263, 88911, 169011, 210789, 507033, 694823, 2084469, 6253407, 18760221]

約数ペア:

[(1, 18760221), (3, 6253407), (9, 2084469), (27, 694823), (37, 507033), (89, 210789), (111, 169011), (211, 88911), (267, 70263), (333, 56337), (633, 29637), (801, 23421), (999, 18779), (1899, 9879), (2403, 7807), (3293, 5697)]