20989804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12893}}^1$

素因数の和:12945

約数の個数: 24

約数和(自身を含む): 41157648

約数和(自身を除く): 20167844

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12893, 25786, 51572, 141823, 283646, 477041, 567292, 954082, 1908164, 5247451, 10494902, 20989804]

約数ペア:

[(1, 20989804), (2, 10494902), (4, 5247451), (11, 1908164), (22, 954082), (37, 567292), (44, 477041), (74, 283646), (148, 141823), (407, 51572), (814, 25786), (1628, 12893)]