80162540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{65707}}^1$

素因数の和:65777

約数の個数: 24

約数和(自身を含む): 171103632

約数和(自身を除く): 90941092

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 65707, 131414, 262828, 328535, 657070, 1314140, 4008127, 8016254, 16032508, 20040635, 40081270, 80162540]

約数ペア:

[(1, 80162540), (2, 40081270), (4, 20040635), (5, 16032508), (10, 8016254), (20, 4008127), (61, 1314140), (122, 657070), (244, 328535), (305, 262828), (610, 131414), (1220, 65707)]