21290535

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67589}}^1$

素因数の和:67607

約数の個数: 24

約数和(自身を含む): 42176160

約数和(自身を除く): 20885625

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67589, 202767, 337945, 473123, 608301, 1013835, 1419369, 2365615, 3041505, 4258107, 7096845, 21290535]

約数ペア:

[(1, 21290535), (3, 7096845), (5, 4258107), (7, 3041505), (9, 2365615), (15, 1419369), (21, 1013835), (35, 608301), (45, 473123), (63, 337945), (105, 202767), (315, 67589)]