211543125

素因数分解:

$3^1\times 5^4\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 354636480

約数和(自身を除く): 143093355

約数列:

[1, 3, 5, 15, 25, 75, 125, 257, 375, 439, 625, 771, 1285, 1317, 1875, 2195, 3855, 6425, 6585, 10975, 19275, 32125, 32925, 54875, 96375, 112823, 160625, 164625, 274375, 338469, 481875, 564115, 823125, 1692345, 2820575, 8461725, 14102875, 42308625, 70514375, 211543125]

約数ペア:

[(1, 211543125), (3, 70514375), (5, 42308625), (15, 14102875), (25, 8461725), (75, 2820575), (125, 1692345), (257, 823125), (375, 564115), (439, 481875), (625, 338469), (771, 274375), (1285, 164625), (1317, 160625), (1875, 112823), (2195, 96375), (3855, 54875), (6425, 32925), (6585, 32125), (10975, 19275)]