19897983

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2411}}^1$

素因数の和:2555

約数の個数: 24

約数和(自身を含む): 33111936

約数和(自身を除く): 13213953

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2411, 2751, 7233, 8253, 16877, 21699, 50631, 151893, 315841, 947523, 2210887, 2842569, 6632661, 19897983]

約数ペア:

[(1, 19897983), (3, 6632661), (7, 2842569), (9, 2210887), (21, 947523), (63, 315841), (131, 151893), (393, 50631), (917, 21699), (1179, 16877), (2411, 8253), (2751, 7233)]