21777808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104701}}^1$

素因数の和:104722

約数の個数: 20

約数和(自身を含む): 45440668

約数和(自身を除く): 23662860

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104701, 209402, 418804, 837608, 1361113, 1675216, 2722226, 5444452, 10888904, 21777808]

約数ペア:

[(1, 21777808), (2, 10888904), (4, 5444452), (8, 2722226), (13, 1675216), (16, 1361113), (26, 837608), (52, 418804), (104, 209402), (208, 104701)]