21747964

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 48090672

約数和(自身を除く): 26342708

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 61, 68, 98, 107, 119, 122, 196, 214, 238, 244, 427, 428, 476, 749, 833, 854, 1037, 1498, 1666, 1708, 1819, 2074, 2989, 2996, 3332, 3638, 4148, 5243, 5978, 6527, 7259, 7276, 10486, 11956, 12733, 13054, 14518, 20972, 25466, 26108, 29036, 45689, 50813, 50932, 89131, 91378, 101626, 110959, 178262, 182756, 203252, 221918, 319823, 356524, 443836, 639646, 776713, 1279292, 1553426, 3106852, 5436991, 10873982, 21747964]

約数ペア:

[(1, 21747964), (2, 10873982), (4, 5436991), (7, 3106852), (14, 1553426), (17, 1279292), (28, 776713), (34, 639646), (49, 443836), (61, 356524), (68, 319823), (98, 221918), (107, 203252), (119, 182756), (122, 178262), (196, 110959), (214, 101626), (238, 91378), (244, 89131), (427, 50932), (428, 50813), (476, 45689), (749, 29036), (833, 26108), (854, 25466), (1037, 20972), (1498, 14518), (1666, 13054), (1708, 12733), (1819, 11956), (2074, 10486), (2989, 7276), (2996, 7259), (3332, 6527), (3638, 5978), (4148, 5243)]