21088136

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 40538880

約数和(自身を除く): 19450744

約数列:

[1, 2, 4, 8, 71, 137, 142, 271, 274, 284, 542, 548, 568, 1084, 1096, 2168, 9727, 19241, 19454, 37127, 38482, 38908, 74254, 76964, 77816, 148508, 153928, 297016, 2636017, 5272034, 10544068, 21088136]

約数ペア:

[(1, 21088136), (2, 10544068), (4, 5272034), (8, 2636017), (71, 297016), (137, 153928), (142, 148508), (271, 77816), (274, 76964), (284, 74254), (542, 38908), (548, 38482), (568, 37127), (1084, 19454), (1096, 19241), (2168, 9727)]