20107875

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:133

約数の個数: 48

約数和(自身を含む): 35436960

約数和(自身を除く): 15329085

約数列:

[1, 3, 5, 15, 25, 29, 43, 75, 87, 125, 129, 145, 215, 375, 435, 645, 725, 1075, 1247, 1849, 2175, 3225, 3625, 3741, 5375, 5547, 6235, 9245, 10875, 16125, 18705, 27735, 31175, 46225, 53621, 93525, 138675, 155875, 160863, 231125, 268105, 467625, 693375, 804315, 1340525, 4021575, 6702625, 20107875]

約数ペア:

[(1, 20107875), (3, 6702625), (5, 4021575), (15, 1340525), (25, 804315), (29, 693375), (43, 467625), (75, 268105), (87, 231125), (125, 160863), (129, 155875), (145, 138675), (215, 93525), (375, 53621), (435, 46225), (645, 31175), (725, 27735), (1075, 18705), (1247, 16125), (1849, 10875), (2175, 9245), (3225, 6235), (3625, 5547), (3741, 5375)]