19369791

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2347}}^1$

素因数の和:2491

約数の個数: 24

約数和(自身を含む): 32233344

約数和(自身を除く): 12863553

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2347, 2751, 7041, 8253, 16429, 21123, 49287, 147861, 307457, 922371, 2152199, 2767113, 6456597, 19369791]

約数ペア:

[(1, 19369791), (3, 6456597), (7, 2767113), (9, 2152199), (21, 922371), (63, 307457), (131, 147861), (393, 49287), (917, 21123), (1179, 16429), (2347, 8253), (2751, 7041)]