21815706731

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{118621}}^1$

素因数の和:118731

約数の個数: 32

約数和(自身を含む): 28059322368

約数和(自身を除く): 6243615637

約数列:

[1, 7, 13, 43, 47, 91, 301, 329, 559, 611, 2021, 3913, 4277, 14147, 26273, 118621, 183911, 830347, 1542073, 5100703, 5575187, 10794511, 35704921, 39026309, 66309139, 72477431, 239733041, 464163973, 507342017, 1678131287, 3116529533, 21815706731]

約数ペア:

[(1, 21815706731), (7, 3116529533), (13, 1678131287), (43, 507342017), (47, 464163973), (91, 239733041), (301, 72477431), (329, 66309139), (559, 39026309), (611, 35704921), (2021, 10794511), (3913, 5575187), (4277, 5100703), (14147, 1542073), (26273, 830347), (118621, 183911)]