21303506211

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{1523}}^1$

素因数の和:2040

約数の個数: 64

約数和(自身を含む): 33045196800

約数和(自身を除く): 11741690589

約数列:

[1, 3, 13, 19, 39, 43, 57, 129, 247, 439, 559, 741, 817, 1317, 1523, 1677, 2451, 4569, 5707, 8341, 10621, 17121, 18877, 19799, 25023, 28937, 31863, 56631, 59397, 65489, 86811, 108433, 196467, 245401, 325299, 358663, 376181, 668597, 736203, 851357, 1075989, 1128543, 1244291, 2005791, 2554071, 3732873, 4662619, 8691761, 12703343, 13987857, 16175783, 26075283, 28749671, 38110029, 48527349, 86249013, 165143459, 373745723, 495430377, 546243749, 1121237169, 1638731247, 7101168737, 21303506211]

約数ペア:

[(1, 21303506211), (3, 7101168737), (13, 1638731247), (19, 1121237169), (39, 546243749), (43, 495430377), (57, 373745723), (129, 165143459), (247, 86249013), (439, 48527349), (559, 38110029), (741, 28749671), (817, 26075283), (1317, 16175783), (1523, 13987857), (1677, 12703343), (2451, 8691761), (4569, 4662619), (5707, 3732873), (8341, 2554071), (10621, 2005791), (17121, 1244291), (18877, 1128543), (19799, 1075989), (25023, 851357), (28937, 736203), (31863, 668597), (56631, 376181), (59397, 358663), (65489, 325299), (86811, 245401), (108433, 196467)]