19985698

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 32

約数和(自身を含む): 32558400

約数和(自身を除く): 12572702

約数列:

[1, 2, 29, 37, 58, 67, 74, 134, 139, 278, 1073, 1943, 2146, 2479, 3886, 4031, 4958, 5143, 8062, 9313, 10286, 18626, 71891, 143782, 149147, 270077, 298294, 344581, 540154, 689162, 9992849, 19985698]

約数ペア:

[(1, 19985698), (2, 9992849), (29, 689162), (37, 540154), (58, 344581), (67, 298294), (74, 270077), (134, 149147), (139, 143782), (278, 71891), (1073, 18626), (1943, 10286), (2146, 9313), (2479, 8062), (3886, 5143), (4031, 4958)]