208778859

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{42101}}^1$

素因数の和:42155

約数の個数: 24

約数和(自身を含む): 328395600

約数和(自身を除く): 119616741

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4959, 42101, 126303, 378909, 799919, 1220929, 2399757, 3662787, 7199271, 10988361, 23197651, 69592953, 208778859]

約数ペア:

[(1, 208778859), (3, 69592953), (9, 23197651), (19, 10988361), (29, 7199271), (57, 3662787), (87, 2399757), (171, 1220929), (261, 799919), (551, 378909), (1653, 126303), (4959, 42101)]