81871460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1\times {\mathrm{661}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 188177472

約数和(自身を除く): 106306012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 563, 661, 1126, 1322, 2252, 2644, 2815, 3305, 5630, 6193, 6610, 7271, 11260, 12386, 13220, 14542, 24772, 29084, 30965, 36355, 61930, 72710, 123860, 145420, 372143, 744286, 1488572, 1860715, 3721430, 4093573, 7442860, 8187146, 16374292, 20467865, 40935730, 81871460]

約数ペア:

[(1, 81871460), (2, 40935730), (4, 20467865), (5, 16374292), (10, 8187146), (11, 7442860), (20, 4093573), (22, 3721430), (44, 1860715), (55, 1488572), (110, 744286), (220, 372143), (563, 145420), (661, 123860), (1126, 72710), (1322, 61930), (2252, 36355), (2644, 30965), (2815, 29084), (3305, 24772), (5630, 14542), (6193, 13220), (6610, 12386), (7271, 11260)]