18938117

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:177

約数の個数: 32

約数和(自身を含む): 23347200

約数和(自身を除く): 4409083

約数列:

[1, 11, 19, 31, 37, 79, 209, 341, 407, 589, 703, 869, 1147, 1501, 2449, 2923, 6479, 7733, 12617, 16511, 21793, 26939, 32153, 46531, 55537, 90613, 239723, 511841, 610907, 996743, 1721647, 18938117]

約数ペア:

[(1, 18938117), (11, 1721647), (19, 996743), (31, 610907), (37, 511841), (79, 239723), (209, 90613), (341, 55537), (407, 46531), (589, 32153), (703, 26939), (869, 21793), (1147, 16511), (1501, 12617), (2449, 7733), (2923, 6479)]