218625981

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{8191}}^1$

素因数の和:8273

約数の個数: 32

約数和(自身を含む): 352321536

約数和(自身を除く): 133695555

約数列:

[1, 3, 7, 21, 31, 41, 93, 123, 217, 287, 651, 861, 1271, 3813, 8191, 8897, 24573, 26691, 57337, 172011, 253921, 335831, 761763, 1007493, 1777447, 2350817, 5332341, 7052451, 10410761, 31232283, 72875327, 218625981]

約数ペア:

[(1, 218625981), (3, 72875327), (7, 31232283), (21, 10410761), (31, 7052451), (41, 5332341), (93, 2350817), (123, 1777447), (217, 1007493), (287, 761763), (651, 335831), (861, 253921), (1271, 172011), (3813, 57337), (8191, 26691), (8897, 24573)]