20281875

素因数分解:

$3^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:425

約数の個数: 40

約数和(自身を含む): 35051280

約数和(自身を除く): 14769405

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 373, 375, 435, 625, 725, 1119, 1865, 1875, 2175, 3625, 5595, 9325, 10817, 10875, 18125, 27975, 32451, 46625, 54085, 54375, 139875, 162255, 233125, 270425, 699375, 811275, 1352125, 4056375, 6760625, 20281875]

約数ペア:

[(1, 20281875), (3, 6760625), (5, 4056375), (15, 1352125), (25, 811275), (29, 699375), (75, 270425), (87, 233125), (125, 162255), (145, 139875), (373, 54375), (375, 54085), (435, 46625), (625, 32451), (725, 27975), (1119, 18125), (1865, 10875), (1875, 10817), (2175, 9325), (3625, 5595)]