20980125

素因数分解:

$3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1097}}^1$

素因数の和:1135

約数の個数: 48

約数和(自身を含む): 40081392

約数和(自身を除く): 19101267

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 255, 375, 425, 765, 1097, 1125, 1275, 2125, 3291, 3825, 5485, 6375, 9873, 16455, 18649, 19125, 27425, 49365, 55947, 82275, 93245, 137125, 167841, 246825, 279735, 411375, 466225, 839205, 1234125, 1398675, 2331125, 4196025, 6993375, 20980125]

約数ペア:

[(1, 20980125), (3, 6993375), (5, 4196025), (9, 2331125), (15, 1398675), (17, 1234125), (25, 839205), (45, 466225), (51, 411375), (75, 279735), (85, 246825), (125, 167841), (153, 137125), (225, 93245), (255, 82275), (375, 55947), (425, 49365), (765, 27425), (1097, 19125), (1125, 18649), (1275, 16455), (2125, 9873), (3291, 6375), (3825, 5485)]