11817981

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1097}}^1$

素因数の和:1135

約数の個数: 40

約数和(自身を含む): 21257280

約数和(自身を除く): 9439299

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1097, 1197, 1539, 3291, 3591, 7679, 9873, 10773, 20843, 23037, 29619, 62529, 69111, 88857, 145901, 187587, 207333, 437703, 562761, 621999, 1313109, 1688283, 3939327, 11817981]

約数ペア:

[(1, 11817981), (3, 3939327), (7, 1688283), (9, 1313109), (19, 621999), (21, 562761), (27, 437703), (57, 207333), (63, 187587), (81, 145901), (133, 88857), (171, 69111), (189, 62529), (399, 29619), (513, 23037), (567, 20843), (1097, 10773), (1197, 9873), (1539, 7679), (3291, 3591)]