21516531

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{5171}}^1$

素因数の和:5266

約数の個数: 16

約数和(自身を含む): 30618240

約数和(自身を除く): 9101709

約数列:

[1, 3, 19, 57, 73, 219, 1387, 4161, 5171, 15513, 98249, 294747, 377483, 1132449, 7172177, 21516531]

約数ペア:

[(1, 21516531), (3, 7172177), (19, 1132449), (57, 377483), (73, 294747), (219, 98249), (1387, 15513), (4161, 5171)]