19770961

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 24525504

約数和(自身を除く): 4754543

約数列:

[1, 7, 23, 49, 53, 161, 331, 371, 1127, 1219, 2317, 2597, 7613, 8533, 16219, 17543, 53291, 59731, 122801, 373037, 403489, 859607, 2824423, 19770961]

約数ペア:

[(1, 19770961), (7, 2824423), (23, 859607), (49, 403489), (53, 373037), (161, 122801), (331, 59731), (371, 53291), (1127, 17543), (1219, 16219), (2317, 8533), (2597, 7613)]