10991981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 15052800

約数和(自身を除く): 4060819

約数列:

[1, 7, 11, 13, 77, 79, 91, 139, 143, 553, 869, 973, 1001, 1027, 1529, 1807, 6083, 7189, 10703, 10981, 11297, 12649, 19877, 76867, 79079, 120791, 139139, 142753, 845537, 999271, 1570283, 10991981]

約数ペア:

[(1, 10991981), (7, 1570283), (11, 999271), (13, 845537), (77, 142753), (79, 139139), (91, 120791), (139, 79079), (143, 76867), (553, 19877), (869, 12649), (973, 11297), (1001, 10981), (1027, 10703), (1529, 7189), (1807, 6083)]