28081875

素因数分解:

$3^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{881}}^1$

素因数の和:921

約数の個数: 40

約数和(自身を含む): 49596624

約数和(自身を除く): 21514749

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 625, 881, 1275, 1875, 2125, 2643, 4405, 6375, 10625, 13215, 14977, 22025, 31875, 44931, 66075, 74885, 110125, 224655, 330375, 374425, 550625, 1123275, 1651875, 1872125, 5616375, 9360625, 28081875]

約数ペア:

[(1, 28081875), (3, 9360625), (5, 5616375), (15, 1872125), (17, 1651875), (25, 1123275), (51, 550625), (75, 374425), (85, 330375), (125, 224655), (255, 110125), (375, 74885), (425, 66075), (625, 44931), (881, 31875), (1275, 22025), (1875, 14977), (2125, 13215), (2643, 10625), (4405, 6375)]