20805941416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{455711}}^1$

素因数の和:456169

約数の個数: 32

約数和(自身を含む): 42107788800

約数和(自身を除く): 21301847384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 439, 878, 1756, 3512, 5707, 11414, 22828, 45656, 455711, 911422, 1822844, 3645688, 5924243, 11848486, 23696972, 47393944, 200057129, 400114258, 800228516, 1600457032, 2600742677, 5201485354, 10402970708, 20805941416]

約数ペア:

[(1, 20805941416), (2, 10402970708), (4, 5201485354), (8, 2600742677), (13, 1600457032), (26, 800228516), (52, 400114258), (104, 200057129), (439, 47393944), (878, 23696972), (1756, 11848486), (3512, 5924243), (5707, 3645688), (11414, 1822844), (22828, 911422), (45656, 455711)]