78821571

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 112411120

約数和(自身を除く): 33589549

約数列:

[1, 3, 17, 51, 229, 289, 397, 687, 867, 1191, 3893, 6749, 11679, 20247, 66181, 90913, 114733, 198543, 272739, 344199, 1545521, 4636563, 26273857, 78821571]

約数ペア:

[(1, 78821571), (3, 26273857), (17, 4636563), (51, 1545521), (229, 344199), (289, 272739), (397, 198543), (687, 114733), (867, 90913), (1191, 66181), (3893, 20247), (6749, 11679)]