21490336

素因数分解:

$2^5\times 7^1\times {\mathrm{197}}^1\times {\mathrm{487}}^1$

素因数の和:701

約数の個数: 48

約数和(自身を含む): 48698496

約数和(自身を除く): 27208160

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 197, 224, 394, 487, 788, 974, 1379, 1576, 1948, 2758, 3152, 3409, 3896, 5516, 6304, 6818, 7792, 11032, 13636, 15584, 22064, 27272, 44128, 54544, 95939, 109088, 191878, 383756, 671573, 767512, 1343146, 1535024, 2686292, 3070048, 5372584, 10745168, 21490336]

約数ペア:

[(1, 21490336), (2, 10745168), (4, 5372584), (7, 3070048), (8, 2686292), (14, 1535024), (16, 1343146), (28, 767512), (32, 671573), (56, 383756), (112, 191878), (197, 109088), (224, 95939), (394, 54544), (487, 44128), (788, 27272), (974, 22064), (1379, 15584), (1576, 13636), (1948, 11032), (2758, 7792), (3152, 6818), (3409, 6304), (3896, 5516)]