20385015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{367}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 39072768

約数和(自身を除く): 18687753

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 367, 483, 529, 805, 1101, 1587, 1835, 2415, 2569, 2645, 3703, 5505, 7707, 7935, 8441, 11109, 12845, 18515, 25323, 38535, 42205, 55545, 59087, 126615, 177261, 194143, 295435, 582429, 886305, 970715, 1359001, 2912145, 4077003, 6795005, 20385015]

約数ペア:

[(1, 20385015), (3, 6795005), (5, 4077003), (7, 2912145), (15, 1359001), (21, 970715), (23, 886305), (35, 582429), (69, 295435), (105, 194143), (115, 177261), (161, 126615), (345, 59087), (367, 55545), (483, 42205), (529, 38535), (805, 25323), (1101, 18515), (1587, 12845), (1835, 11109), (2415, 8441), (2569, 7935), (2645, 7707), (3703, 5505)]