21267617

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 26199936

約数和(自身を除く): 4932319

約数列:

[1, 7, 23, 49, 113, 161, 167, 791, 1127, 1169, 2599, 3841, 5537, 8183, 18193, 18871, 26887, 127351, 132097, 188209, 434033, 924679, 3038231, 21267617]

約数ペア:

[(1, 21267617), (7, 3038231), (23, 924679), (49, 434033), (113, 188209), (161, 132097), (167, 127351), (791, 26887), (1127, 18871), (1169, 18193), (2599, 8183), (3841, 5537)]