20802465

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 38188800

約数和(自身を除く): 17386335

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 101, 115, 199, 207, 303, 345, 505, 597, 909, 995, 1035, 1515, 1791, 2323, 2985, 4545, 4577, 6969, 8955, 11615, 13731, 20099, 20907, 22885, 34845, 41193, 60297, 68655, 100495, 104535, 180891, 205965, 301485, 462277, 904455, 1386831, 2311385, 4160493, 6934155, 20802465]

約数ペア:

[(1, 20802465), (3, 6934155), (5, 4160493), (9, 2311385), (15, 1386831), (23, 904455), (45, 462277), (69, 301485), (101, 205965), (115, 180891), (199, 104535), (207, 100495), (303, 68655), (345, 60297), (505, 41193), (597, 34845), (909, 22885), (995, 20907), (1035, 20099), (1515, 13731), (1791, 11615), (2323, 8955), (2985, 6969), (4545, 4577)]