18793411

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 23818704

約数和(自身を除く): 5025293

約数列:

[1, 7, 13, 49, 91, 163, 181, 637, 1141, 1267, 2119, 2353, 7987, 8869, 14833, 16471, 29503, 103831, 115297, 206521, 383539, 1445647, 2684773, 18793411]

約数ペア:

[(1, 18793411), (7, 2684773), (13, 1445647), (49, 383539), (91, 206521), (163, 115297), (181, 103831), (637, 29503), (1141, 16471), (1267, 14833), (2119, 8869), (2353, 7987)]