21390226

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2579}}^1$

素因数の和:2634

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 17619374

約数列:

[1, 2, 11, 13, 22, 26, 29, 58, 143, 286, 319, 377, 638, 754, 2579, 4147, 5158, 8294, 28369, 33527, 56738, 67054, 74791, 149582, 368797, 737594, 822701, 972283, 1645402, 1944566, 10695113, 21390226]

約数ペア:

[(1, 21390226), (2, 10695113), (11, 1944566), (13, 1645402), (22, 972283), (26, 822701), (29, 737594), (58, 368797), (143, 149582), (286, 74791), (319, 67054), (377, 56738), (638, 33527), (754, 28369), (2579, 8294), (4147, 5158)]