18991125

素因数分解:

$3^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{331}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 37290240

約数和(自身を除く): 18299115

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 125, 135, 153, 225, 255, 331, 375, 425, 459, 675, 765, 993, 1125, 1275, 1655, 2125, 2295, 2979, 3375, 3825, 4965, 5627, 6375, 8275, 8937, 11475, 14895, 16881, 19125, 24825, 28135, 41375, 44685, 50643, 57375, 74475, 84405, 124125, 140675, 151929, 223425, 253215, 372375, 422025, 703375, 759645, 1117125, 1266075, 2110125, 3798225, 6330375, 18991125]

約数ペア:

[(1, 18991125), (3, 6330375), (5, 3798225), (9, 2110125), (15, 1266075), (17, 1117125), (25, 759645), (27, 703375), (45, 422025), (51, 372375), (75, 253215), (85, 223425), (125, 151929), (135, 140675), (153, 124125), (225, 84405), (255, 74475), (331, 57375), (375, 50643), (425, 44685), (459, 41375), (675, 28135), (765, 24825), (993, 19125), (1125, 16881), (1275, 14895), (1655, 11475), (2125, 8937), (2295, 8275), (2979, 6375), (3375, 5627), (3825, 4965)]