18921875

素因数分解:

$5^6\times 7^1\times {\mathrm{173}}^1$

素因数の和:210

約数の個数: 28

約数和(自身を含む): 27187152

約数和(自身を除く): 8265277

約数列:

[1, 5, 7, 25, 35, 125, 173, 175, 625, 865, 875, 1211, 3125, 4325, 4375, 6055, 15625, 21625, 21875, 30275, 108125, 109375, 151375, 540625, 756875, 2703125, 3784375, 18921875]

約数ペア:

[(1, 18921875), (5, 3784375), (7, 2703125), (25, 756875), (35, 540625), (125, 151375), (173, 109375), (175, 108125), (625, 30275), (865, 21875), (875, 21625), (1211, 15625), (3125, 6055), (4325, 4375)]