18838125

素因数分解:

$3^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:240

約数の個数: 60

約数和(自身を含む): 36185292

約数和(自身を除く): 17347167

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 197, 225, 255, 375, 425, 591, 625, 765, 985, 1125, 1275, 1773, 1875, 2125, 2955, 3349, 3825, 4925, 5625, 6375, 8865, 10047, 10625, 14775, 16745, 19125, 24625, 30141, 31875, 44325, 50235, 73875, 83725, 95625, 123125, 150705, 221625, 251175, 369375, 418625, 753525, 1108125, 1255875, 2093125, 3767625, 6279375, 18838125]

約数ペア:

[(1, 18838125), (3, 6279375), (5, 3767625), (9, 2093125), (15, 1255875), (17, 1108125), (25, 753525), (45, 418625), (51, 369375), (75, 251175), (85, 221625), (125, 150705), (153, 123125), (197, 95625), (225, 83725), (255, 73875), (375, 50235), (425, 44325), (591, 31875), (625, 30141), (765, 24625), (985, 19125), (1125, 16745), (1275, 14775), (1773, 10625), (1875, 10047), (2125, 8865), (2955, 6375), (3349, 5625), (3825, 4925)]