81225136

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{563}}^1$

素因数の和:769

約数の個数: 40

約数和(自身を含む): 161132544

約数和(自身を除く): 79907408

約数列:

[1, 2, 4, 8, 16, 71, 127, 142, 254, 284, 508, 563, 568, 1016, 1126, 1136, 2032, 2252, 4504, 9008, 9017, 18034, 36068, 39973, 71501, 72136, 79946, 143002, 144272, 159892, 286004, 319784, 572008, 639568, 1144016, 5076571, 10153142, 20306284, 40612568, 81225136]

約数ペア:

[(1, 81225136), (2, 40612568), (4, 20306284), (8, 10153142), (16, 5076571), (71, 1144016), (127, 639568), (142, 572008), (254, 319784), (284, 286004), (508, 159892), (563, 144272), (568, 143002), (1016, 79946), (1126, 72136), (1136, 71501), (2032, 39973), (2252, 36068), (4504, 18034), (9008, 9017)]