20808123

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{643}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 33632256

約数和(自身を除く): 12824133

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 643, 1407, 1541, 1929, 4501, 4623, 10787, 13503, 14789, 32361, 43081, 44367, 103523, 129243, 301567, 310569, 904701, 990863, 2972589, 6936041, 20808123]

約数ペア:

[(1, 20808123), (3, 6936041), (7, 2972589), (21, 990863), (23, 904701), (67, 310569), (69, 301567), (161, 129243), (201, 103523), (469, 44367), (483, 43081), (643, 32361), (1407, 14789), (1541, 13503), (1929, 10787), (4501, 4623)]