21180225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25673}}^1$

素因数の和:25697

約数の個数: 24

約数和(自身を含む): 38202912

約数和(自身を除く): 17022687

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25673, 77019, 128365, 282403, 385095, 641825, 847209, 1412015, 1925475, 4236045, 7060075, 21180225]

約数ペア:

[(1, 21180225), (3, 7060075), (5, 4236045), (11, 1925475), (15, 1412015), (25, 847209), (33, 641825), (55, 385095), (75, 282403), (165, 128365), (275, 77019), (825, 25673)]