20744860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{761}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 46085760

約数和(自身を除く): 25340900

約数列:

[1, 2, 4, 5, 10, 20, 29, 47, 58, 94, 116, 145, 188, 235, 290, 470, 580, 761, 940, 1363, 1522, 2726, 3044, 3805, 5452, 6815, 7610, 13630, 15220, 22069, 27260, 35767, 44138, 71534, 88276, 110345, 143068, 178835, 220690, 357670, 441380, 715340, 1037243, 2074486, 4148972, 5186215, 10372430, 20744860]

約数ペア:

[(1, 20744860), (2, 10372430), (4, 5186215), (5, 4148972), (10, 2074486), (20, 1037243), (29, 715340), (47, 441380), (58, 357670), (94, 220690), (116, 178835), (145, 143068), (188, 110345), (235, 88276), (290, 71534), (470, 44138), (580, 35767), (761, 27260), (940, 22069), (1363, 15220), (1522, 13630), (2726, 7610), (3044, 6815), (3805, 5452)]