18878101

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:177

約数の個数: 32

約数和(自身を含む): 23224320

約数和(自身を除く): 4346219

約数列:

[1, 11, 23, 29, 31, 83, 253, 319, 341, 667, 713, 899, 913, 1909, 2407, 2573, 7337, 7843, 9889, 20677, 20999, 26477, 28303, 55361, 59179, 74617, 227447, 608971, 650969, 820787, 1716191, 18878101]

約数ペア:

[(1, 18878101), (11, 1716191), (23, 820787), (29, 650969), (31, 608971), (83, 227447), (253, 74617), (319, 59179), (341, 55361), (667, 28303), (713, 26477), (899, 20999), (913, 20677), (1909, 9889), (2407, 7843), (2573, 7337)]