18872757

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12263}}^1$

素因数の和:12294

約数の個数: 20

約数和(自身を含む): 29678880

約数和(自身を除く): 10806123

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12263, 36789, 110367, 232997, 331101, 698991, 993303, 2096973, 6290919, 18872757]

約数ペア:

[(1, 18872757), (3, 6290919), (9, 2096973), (19, 993303), (27, 698991), (57, 331101), (81, 232997), (171, 110367), (513, 36789), (1539, 12263)]