21257925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21803}}^1$

素因数の和:21829

約数の個数: 24

約数和(自身を含む): 37851744

約数和(自身を除く): 16593819

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21803, 65409, 109015, 283439, 327045, 545075, 850317, 1417195, 1635225, 4251585, 7085975, 21257925]

約数ペア:

[(1, 21257925), (3, 7085975), (5, 4251585), (13, 1635225), (15, 1417195), (25, 850317), (39, 545075), (65, 327045), (75, 283439), (195, 109015), (325, 65409), (975, 21803)]