28003125

素因数分解:

$3^1\times 5^5\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 48746880

約数和(自身を除く): 20743755

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 103, 125, 145, 309, 375, 435, 515, 625, 725, 1545, 1875, 2175, 2575, 2987, 3125, 3625, 7725, 8961, 9375, 10875, 12875, 14935, 18125, 38625, 44805, 54375, 64375, 74675, 90625, 193125, 224025, 271875, 321875, 373375, 965625, 1120125, 1866875, 5600625, 9334375, 28003125]

約数ペア:

[(1, 28003125), (3, 9334375), (5, 5600625), (15, 1866875), (25, 1120125), (29, 965625), (75, 373375), (87, 321875), (103, 271875), (125, 224025), (145, 193125), (309, 90625), (375, 74675), (435, 64375), (515, 54375), (625, 44805), (725, 38625), (1545, 18125), (1875, 14935), (2175, 12875), (2575, 10875), (2987, 9375), (3125, 8961), (3625, 7725)]