21865613

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:497

約数の個数: 24

約数和(自身を含む): 28071360

約数和(自身を除く): 6205747

約数列:

[1, 7, 11, 49, 77, 113, 359, 539, 791, 1243, 2513, 3949, 5537, 8701, 17591, 27643, 40567, 60907, 193501, 283969, 446237, 1987783, 3123659, 21865613]

約数ペア:

[(1, 21865613), (7, 3123659), (11, 1987783), (49, 446237), (77, 283969), (113, 193501), (359, 60907), (539, 40567), (791, 27643), (1243, 17591), (2513, 8701), (3949, 5537)]