81629795

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 112015680

約数和(自身を除く): 30385885

約数列:

[1, 5, 13, 19, 65, 95, 157, 247, 421, 785, 1235, 2041, 2105, 2983, 5473, 7999, 10205, 14915, 27365, 38779, 39995, 66097, 103987, 193895, 330485, 519935, 859261, 1255843, 4296305, 6279215, 16325959, 81629795]

約数ペア:

[(1, 81629795), (5, 16325959), (13, 6279215), (19, 4296305), (65, 1255843), (95, 859261), (157, 519935), (247, 330485), (421, 193895), (785, 103987), (1235, 66097), (2041, 39995), (2105, 38779), (2983, 27365), (5473, 14915), (7999, 10205)]