16972641

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4021}}^1$

素因数の和:4101

約数の個数: 24

約数和(自身を含む): 28443584

約数和(自身を除く): 11470943

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4021, 4221, 12063, 28147, 36189, 84441, 253323, 269407, 808221, 1885849, 2424663, 5657547, 16972641]

約数ペア:

[(1, 16972641), (3, 5657547), (7, 2424663), (9, 1885849), (21, 808221), (63, 269407), (67, 253323), (201, 84441), (469, 36189), (603, 28147), (1407, 12063), (4021, 4221)]