18824157

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:631

約数の個数: 40

約数和(自身を含む): 31560672

約数和(自身を除く): 12736515

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 571, 891, 999, 1221, 1713, 2997, 3663, 5139, 6281, 10989, 15417, 18843, 21127, 32967, 46251, 56529, 63381, 169587, 190143, 232397, 508761, 570429, 697191, 1711287, 2091573, 6274719, 18824157]

約数ペア:

[(1, 18824157), (3, 6274719), (9, 2091573), (11, 1711287), (27, 697191), (33, 570429), (37, 508761), (81, 232397), (99, 190143), (111, 169587), (297, 63381), (333, 56529), (407, 46251), (571, 32967), (891, 21127), (999, 18843), (1221, 15417), (1713, 10989), (2997, 6281), (3663, 5139)]