19998375

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{3137}}^1$

素因数の和:3172

約数の個数: 32

約数和(自身を含む): 35246016

約数和(自身を除く): 15247641

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 2125, 3137, 6375, 9411, 15685, 47055, 53329, 78425, 159987, 235275, 266645, 392125, 799935, 1176375, 1333225, 3999675, 6666125, 19998375]

約数ペア:

[(1, 19998375), (3, 6666125), (5, 3999675), (15, 1333225), (17, 1176375), (25, 799935), (51, 392125), (75, 266645), (85, 235275), (125, 159987), (255, 78425), (375, 53329), (425, 47055), (1275, 15685), (2125, 9411), (3137, 6375)]