21607575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2381}}^1$

素因数の和:2416

約数の個数: 36

約数和(自身を含む): 39283944

約数和(自身を除く): 17676369

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2381, 3025, 7143, 9075, 11905, 26191, 35715, 59525, 78573, 130955, 178575, 288101, 392865, 654775, 864303, 1440505, 1964325, 4321515, 7202525, 21607575]

約数ペア:

[(1, 21607575), (3, 7202525), (5, 4321515), (11, 1964325), (15, 1440505), (25, 864303), (33, 654775), (55, 392865), (75, 288101), (121, 178575), (165, 130955), (275, 78573), (363, 59525), (605, 35715), (825, 26191), (1815, 11905), (2381, 9075), (3025, 7143)]