20678416

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{971}}^1$

素因数の和:1012

約数の個数: 40

約数和(自身を含む): 44113248

約数和(自身を除く): 23434832

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 121, 176, 242, 484, 968, 971, 1331, 1936, 1942, 2662, 3884, 5324, 7768, 10648, 10681, 15536, 21296, 21362, 42724, 85448, 117491, 170896, 234982, 469964, 939928, 1292401, 1879856, 2584802, 5169604, 10339208, 20678416]

約数ペア:

[(1, 20678416), (2, 10339208), (4, 5169604), (8, 2584802), (11, 1879856), (16, 1292401), (22, 939928), (44, 469964), (88, 234982), (121, 170896), (176, 117491), (242, 85448), (484, 42724), (968, 21362), (971, 21296), (1331, 15536), (1936, 10681), (1942, 10648), (2662, 7768), (3884, 5324)]