21122216

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 41186880

約数和(自身を除く): 20064664

約数列:

[1, 2, 4, 8, 41, 71, 82, 142, 164, 284, 328, 568, 907, 1814, 2911, 3628, 5822, 7256, 11644, 23288, 37187, 64397, 74374, 128794, 148748, 257588, 297496, 515176, 2640277, 5280554, 10561108, 21122216]

約数ペア:

[(1, 21122216), (2, 10561108), (4, 5280554), (8, 2640277), (41, 515176), (71, 297496), (82, 257588), (142, 148748), (164, 128794), (284, 74374), (328, 64397), (568, 37187), (907, 23288), (1814, 11644), (2911, 7256), (3628, 5822)]