21121570

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 39651120

約数和(自身を除く): 18529550

約数列:

[1, 2, 5, 10, 29, 58, 145, 173, 290, 346, 421, 842, 865, 1730, 2105, 4210, 5017, 10034, 12209, 24418, 25085, 50170, 61045, 72833, 122090, 145666, 364165, 728330, 2112157, 4224314, 10560785, 21121570]

約数ペア:

[(1, 21121570), (2, 10560785), (5, 4224314), (10, 2112157), (29, 728330), (58, 364165), (145, 145666), (173, 122090), (290, 72833), (346, 61045), (421, 50170), (842, 25085), (865, 24418), (1730, 12209), (2105, 10034), (4210, 5017)]