281875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:72

約数の個数: 20

約数和(自身を含む): 393624

約数和(自身を除く): 111749

約数列:

[1, 5, 11, 25, 41, 55, 125, 205, 275, 451, 625, 1025, 1375, 2255, 5125, 6875, 11275, 25625, 56375, 281875]

約数ペア:

[(1, 281875), (5, 56375), (11, 25625), (25, 11275), (41, 6875), (55, 5125), (125, 2255), (205, 1375), (275, 1025), (451, 625)]