20898867

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{659}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 31458240

約数和(自身を除く): 10559373

約数列:

[1, 3, 11, 31, 33, 93, 341, 659, 961, 1023, 1977, 2883, 7249, 10571, 20429, 21747, 31713, 61287, 224719, 633299, 674157, 1899897, 6966289, 20898867]

約数ペア:

[(1, 20898867), (3, 6966289), (11, 1899897), (31, 674157), (33, 633299), (93, 224719), (341, 61287), (659, 31713), (961, 21747), (1023, 20429), (1977, 10571), (2883, 7249)]