21665425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{919}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 28748160

約数和(自身を除く): 7082735

約数列:

[1, 5, 23, 25, 41, 115, 205, 575, 919, 943, 1025, 4595, 4715, 21137, 22975, 23575, 37679, 105685, 188395, 528425, 866617, 941975, 4333085, 21665425]

約数ペア:

[(1, 21665425), (5, 4333085), (23, 941975), (25, 866617), (41, 528425), (115, 188395), (205, 105685), (575, 37679), (919, 23575), (943, 22975), (1025, 21137), (4595, 4715)]