21106925

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4159}}^1$

素因数の和:4205

約数の個数: 24

約数和(自身を含む): 30950400

約数和(自身を除く): 9843475

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 4159, 5075, 20795, 29113, 103975, 120611, 145565, 603055, 727825, 844277, 3015275, 4221385, 21106925]

約数ペア:

[(1, 21106925), (5, 4221385), (7, 3015275), (25, 844277), (29, 727825), (35, 603055), (145, 145565), (175, 120611), (203, 103975), (725, 29113), (1015, 20795), (4159, 5075)]