721629

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:222

約数の個数: 20

約数和(自身を含む): 1103520

約数和(自身を除く): 381891

約数列:

[1, 3, 9, 27, 59, 81, 151, 177, 453, 531, 1359, 1593, 4077, 4779, 8909, 12231, 26727, 80181, 240543, 721629]

約数ペア:

[(1, 721629), (3, 240543), (9, 80181), (27, 26727), (59, 12231), (81, 8909), (151, 4779), (177, 4077), (453, 1593), (531, 1359)]