21355096

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26545064

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 71, 82, 131, 142, 164, 262, 284, 287, 328, 497, 524, 568, 574, 917, 994, 1048, 1148, 1834, 1988, 2296, 2911, 3668, 3976, 5371, 5822, 7336, 9301, 10742, 11644, 18602, 20377, 21484, 23288, 37204, 37597, 40754, 42968, 65107, 74408, 75194, 81508, 130214, 150388, 163016, 260428, 300776, 381341, 520856, 762682, 1525364, 2669387, 3050728, 5338774, 10677548, 21355096]

約数ペア:

[(1, 21355096), (2, 10677548), (4, 5338774), (7, 3050728), (8, 2669387), (14, 1525364), (28, 762682), (41, 520856), (56, 381341), (71, 300776), (82, 260428), (131, 163016), (142, 150388), (164, 130214), (262, 81508), (284, 75194), (287, 74408), (328, 65107), (497, 42968), (524, 40754), (568, 37597), (574, 37204), (917, 23288), (994, 21484), (1048, 20377), (1148, 18602), (1834, 11644), (1988, 10742), (2296, 9301), (2911, 7336), (3668, 5822), (3976, 5371)]