21231375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{5147}}^1$

素因数の和:5176

約数の個数: 32

約数和(自身を含む): 38548224

約数和(自身を除く): 17316849

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 825, 1375, 4125, 5147, 15441, 25735, 56617, 77205, 128675, 169851, 283085, 386025, 643375, 849255, 1415425, 1930125, 4246275, 7077125, 21231375]

約数ペア:

[(1, 21231375), (3, 7077125), (5, 4246275), (11, 1930125), (15, 1415425), (25, 849255), (33, 643375), (55, 386025), (75, 283085), (125, 169851), (165, 128675), (275, 77205), (375, 56617), (825, 25735), (1375, 15441), (4125, 5147)]