21120825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25601}}^1$

素因数の和:25625

約数の個数: 24

約数和(自身を含む): 38095776

約数和(自身を除く): 16974951

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25601, 76803, 128005, 281611, 384015, 640025, 844833, 1408055, 1920075, 4224165, 7040275, 21120825]

約数ペア:

[(1, 21120825), (3, 7040275), (5, 4224165), (11, 1920075), (15, 1408055), (25, 844833), (33, 640025), (55, 384015), (75, 281611), (165, 128005), (275, 76803), (825, 25601)]