21245955368

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{309131}}^1$

素因数の和:309230

約数の個数: 48

約数和(自身を含む): 44403720480

約数和(自身を除く): 23157765112

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 121, 142, 242, 284, 484, 568, 781, 968, 1562, 3124, 6248, 8591, 17182, 34364, 68728, 309131, 618262, 1236524, 2473048, 3400441, 6800882, 13601764, 21948301, 27203528, 37404851, 43896602, 74809702, 87793204, 149619404, 175586408, 241431311, 299238808, 482862622, 965725244, 1931450488, 2655744421, 5311488842, 10622977684, 21245955368]

約数ペア:

[(1, 21245955368), (2, 10622977684), (4, 5311488842), (8, 2655744421), (11, 1931450488), (22, 965725244), (44, 482862622), (71, 299238808), (88, 241431311), (121, 175586408), (142, 149619404), (242, 87793204), (284, 74809702), (484, 43896602), (568, 37404851), (781, 27203528), (968, 21948301), (1562, 13601764), (3124, 6800882), (6248, 3400441), (8591, 2473048), (17182, 1236524), (34364, 618262), (68728, 309131)]