18715779

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12161}}^1$

素因数の和:12192

約数の個数: 20

約数和(自身を含む): 29432040

約数和(自身を除く): 10716261

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12161, 36483, 109449, 231059, 328347, 693177, 985041, 2079531, 6238593, 18715779]

約数ペア:

[(1, 18715779), (3, 6238593), (9, 2079531), (19, 985041), (27, 693177), (57, 328347), (81, 231059), (171, 109449), (513, 36483), (1539, 12161)]