20053971

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4751}}^1$

素因数の和:4831

約数の個数: 24

約数和(自身を含む): 33606144

約数和(自身を除く): 13552173

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4751, 14253, 33257, 42759, 99771, 299313, 318317, 954951, 2228219, 2864853, 6684657, 20053971]

約数ペア:

[(1, 20053971), (3, 6684657), (7, 2864853), (9, 2228219), (21, 954951), (63, 318317), (67, 299313), (201, 99771), (469, 42759), (603, 33257), (1407, 14253), (4221, 4751)]