4004991

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 32

約数和(自身を含む): 6444800

約数和(自身を除く): 2439809

約数列:

[1, 3, 9, 19, 27, 37, 57, 111, 171, 211, 333, 513, 633, 703, 999, 1899, 2109, 4009, 5697, 6327, 7807, 12027, 18981, 23421, 36081, 70263, 108243, 148333, 210789, 444999, 1334997, 4004991]

約数ペア:

[(1, 4004991), (3, 1334997), (9, 444999), (19, 210789), (27, 148333), (37, 108243), (57, 70263), (111, 36081), (171, 23421), (211, 18981), (333, 12027), (513, 7807), (633, 6327), (703, 5697), (999, 4009), (1899, 2109)]