21379270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{739}}^1$

素因数の和:1020

約数の個数: 32

約数和(自身を含む): 42197760

約数和(自身を除く): 20818490

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 263, 526, 739, 1315, 1478, 2630, 2893, 3695, 5786, 7390, 8129, 14465, 16258, 28930, 40645, 81290, 194357, 388714, 971785, 1943570, 2137927, 4275854, 10689635, 21379270]

約数ペア:

[(1, 21379270), (2, 10689635), (5, 4275854), (10, 2137927), (11, 1943570), (22, 971785), (55, 388714), (110, 194357), (263, 81290), (526, 40645), (739, 28930), (1315, 16258), (1478, 14465), (2630, 8129), (2893, 7390), (3695, 5786)]