21781452

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2143}}^1$

素因数の和:2179

約数の個数: 72

約数和(自身を含む): 63874048

約数和(自身を除く): 42092596

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 84, 121, 132, 154, 231, 242, 308, 363, 462, 484, 726, 847, 924, 1452, 1694, 2143, 2541, 3388, 4286, 5082, 6429, 8572, 10164, 12858, 15001, 23573, 25716, 30002, 45003, 47146, 60004, 70719, 90006, 94292, 141438, 165011, 180012, 259303, 282876, 330022, 495033, 518606, 660044, 777909, 990066, 1037212, 1555818, 1815121, 1980132, 3111636, 3630242, 5445363, 7260484, 10890726, 21781452]

約数ペア:

[(1, 21781452), (2, 10890726), (3, 7260484), (4, 5445363), (6, 3630242), (7, 3111636), (11, 1980132), (12, 1815121), (14, 1555818), (21, 1037212), (22, 990066), (28, 777909), (33, 660044), (42, 518606), (44, 495033), (66, 330022), (77, 282876), (84, 259303), (121, 180012), (132, 165011), (154, 141438), (231, 94292), (242, 90006), (308, 70719), (363, 60004), (462, 47146), (484, 45003), (726, 30002), (847, 25716), (924, 23573), (1452, 15001), (1694, 12858), (2143, 10164), (2541, 8572), (3388, 6429), (4286, 5082)]