18381616

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1471}}^1$

素因数の和:1561

約数の個数: 40

約数和(自身を含む): 39426048

約数和(自身を除く): 21044432

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1471, 1562, 2942, 3124, 5884, 6248, 11768, 12496, 16181, 23536, 32362, 64724, 104441, 129448, 208882, 258896, 417764, 835528, 1148851, 1671056, 2297702, 4595404, 9190808, 18381616]

約数ペア:

[(1, 18381616), (2, 9190808), (4, 4595404), (8, 2297702), (11, 1671056), (16, 1148851), (22, 835528), (44, 417764), (71, 258896), (88, 208882), (142, 129448), (176, 104441), (284, 64724), (568, 32362), (781, 23536), (1136, 16181), (1471, 12496), (1562, 11768), (2942, 6248), (3124, 5884)]