221355909

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{143831}}^1$

素因数の和:143862

約数の個数: 20

約数和(自身を含む): 348073440

約数和(自身を除く): 126717531

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 143831, 431493, 1294479, 2732789, 3883437, 8198367, 11650311, 24595101, 73785303, 221355909]

約数ペア:

[(1, 221355909), (3, 73785303), (9, 24595101), (19, 11650311), (27, 8198367), (57, 3883437), (81, 2732789), (171, 1294479), (513, 431493), (1539, 143831)]