28783209

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1787}}^1$

素因数の和:1869

約数の個数: 32

約数和(自身を含む): 48061440

約数和(自身を除く): 19278231

約数列:

[1, 3, 7, 13, 21, 39, 59, 91, 177, 273, 413, 767, 1239, 1787, 2301, 5361, 5369, 12509, 16107, 23231, 37527, 69693, 105433, 162617, 316299, 487851, 738031, 1370629, 2214093, 4111887, 9594403, 28783209]

約数ペア:

[(1, 28783209), (3, 9594403), (7, 4111887), (13, 2214093), (21, 1370629), (39, 738031), (59, 487851), (91, 316299), (177, 162617), (273, 105433), (413, 69693), (767, 37527), (1239, 23231), (1787, 16107), (2301, 12509), (5361, 5369)]