21297375

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1721}}^1$

素因数の和:1753

約数の個数: 48

約数和(自身を含む): 41906592

約数和(自身を除く): 20609217

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 125, 165, 225, 275, 375, 495, 825, 1125, 1375, 1721, 2475, 4125, 5163, 8605, 12375, 15489, 18931, 25815, 43025, 56793, 77445, 94655, 129075, 170379, 215125, 283965, 387225, 473275, 645375, 851895, 1419825, 1936125, 2366375, 4259475, 7099125, 21297375]

約数ペア:

[(1, 21297375), (3, 7099125), (5, 4259475), (9, 2366375), (11, 1936125), (15, 1419825), (25, 851895), (33, 645375), (45, 473275), (55, 387225), (75, 283965), (99, 215125), (125, 170379), (165, 129075), (225, 94655), (275, 77445), (375, 56793), (495, 43025), (825, 25815), (1125, 18931), (1375, 15489), (1721, 12375), (2475, 8605), (4125, 5163)]