21043270

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 39528000

約数和(自身を除く): 18484730

約数列:

[1, 2, 5, 10, 29, 58, 145, 149, 290, 298, 487, 745, 974, 1490, 2435, 4321, 4870, 8642, 14123, 21605, 28246, 43210, 70615, 72563, 141230, 145126, 362815, 725630, 2104327, 4208654, 10521635, 21043270]

約数ペア:

[(1, 21043270), (2, 10521635), (5, 4208654), (10, 2104327), (29, 725630), (58, 362815), (145, 145126), (149, 141230), (290, 72563), (298, 70615), (487, 43210), (745, 28246), (974, 21605), (1490, 14123), (2435, 8642), (4321, 4870)]