20481344

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:367

約数の個数: 56

約数和(自身を含む): 44378880

約数和(自身を除く): 23897536

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 103, 104, 206, 208, 239, 412, 416, 478, 824, 832, 956, 1339, 1648, 1912, 2678, 3107, 3296, 3824, 5356, 6214, 6592, 7648, 10712, 12428, 15296, 21424, 24617, 24856, 42848, 49234, 49712, 85696, 98468, 99424, 196936, 198848, 320021, 393872, 640042, 787744, 1280084, 1575488, 2560168, 5120336, 10240672, 20481344]

約数ペア:

[(1, 20481344), (2, 10240672), (4, 5120336), (8, 2560168), (13, 1575488), (16, 1280084), (26, 787744), (32, 640042), (52, 393872), (64, 320021), (103, 198848), (104, 196936), (206, 99424), (208, 98468), (239, 85696), (412, 49712), (416, 49234), (478, 42848), (824, 24856), (832, 24617), (956, 21424), (1339, 15296), (1648, 12428), (1912, 10712), (2678, 7648), (3107, 6592), (3296, 6214), (3824, 5356)]