390398589

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{23209}}^1$

素因数の和:23314

約数の個数: 32

約数和(自身を含む): 668448000

約数和(自身を除く): 278049411

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1869, 2403, 5607, 16821, 23209, 69627, 162463, 208881, 487389, 626643, 1462167, 2065601, 4386501, 6196803, 14459207, 18590409, 43377621, 55771227, 130132863, 390398589]

約数ペア:

[(1, 390398589), (3, 130132863), (7, 55771227), (9, 43377621), (21, 18590409), (27, 14459207), (63, 6196803), (89, 4386501), (189, 2065601), (267, 1462167), (623, 626643), (801, 487389), (1869, 208881), (2403, 162463), (5607, 69627), (16821, 23209)]