81380272

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{46663}}^1$

素因数の和:46780

約数の個数: 20

約数和(自身を含む): 159124240

約数和(自身を除く): 77743968

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 46663, 93326, 186652, 373304, 746608, 5086267, 10172534, 20345068, 40690136, 81380272]

約数ペア:

[(1, 81380272), (2, 40690136), (4, 20345068), (8, 10172534), (16, 5086267), (109, 746608), (218, 373304), (436, 186652), (872, 93326), (1744, 46663)]