13121025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 23623488

約数和(自身を除く): 10502463

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 85, 123, 205, 251, 255, 425, 615, 697, 753, 1025, 1255, 1275, 2091, 3075, 3485, 3765, 4267, 6275, 10291, 10455, 12801, 17425, 18825, 21335, 30873, 51455, 52275, 64005, 106675, 154365, 174947, 257275, 320025, 524841, 771825, 874735, 2624205, 4373675, 13121025]

約数ペア:

[(1, 13121025), (3, 4373675), (5, 2624205), (15, 874735), (17, 771825), (25, 524841), (41, 320025), (51, 257275), (75, 174947), (85, 154365), (123, 106675), (205, 64005), (251, 52275), (255, 51455), (425, 30873), (615, 21335), (697, 18825), (753, 17425), (1025, 12801), (1255, 10455), (1275, 10291), (2091, 6275), (3075, 4267), (3485, 3765)]