18938907

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{683}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 11704293

約数列:

[1, 3, 9, 13, 27, 39, 79, 117, 237, 351, 683, 711, 1027, 2049, 2133, 3081, 6147, 8879, 9243, 18441, 26637, 27729, 53957, 79911, 161871, 239733, 485613, 701441, 1456839, 2104323, 6312969, 18938907]

約数ペア:

[(1, 18938907), (3, 6312969), (9, 2104323), (13, 1456839), (27, 701441), (39, 485613), (79, 239733), (117, 161871), (237, 79911), (351, 53957), (683, 27729), (711, 26637), (1027, 18441), (2049, 9243), (2133, 8879), (3081, 6147)]