80817220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1741}}^1$

素因数の和:1972

約数の個数: 48

約数和(自身を含む): 186129216

約数和(自身を除く): 105311996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 211, 220, 422, 844, 1055, 1741, 2110, 2321, 3482, 4220, 4642, 6964, 8705, 9284, 11605, 17410, 19151, 23210, 34820, 38302, 46420, 76604, 95755, 191510, 367351, 383020, 734702, 1469404, 1836755, 3673510, 4040861, 7347020, 8081722, 16163444, 20204305, 40408610, 80817220]

約数ペア:

[(1, 80817220), (2, 40408610), (4, 20204305), (5, 16163444), (10, 8081722), (11, 7347020), (20, 4040861), (22, 3673510), (44, 1836755), (55, 1469404), (110, 734702), (211, 383020), (220, 367351), (422, 191510), (844, 95755), (1055, 76604), (1741, 46420), (2110, 38302), (2321, 34820), (3482, 23210), (4220, 19151), (4642, 17410), (6964, 11605), (8705, 9284)]