20168653808

素因数分解:

$2^4\times {\mathrm{409}}^1\times {\mathrm{491}}^1\times {\mathrm{6277}}^1$

素因数の和:7185

約数の個数: 40

約数和(自身を含む): 39258342960

約数和(自身を除く): 19089689152

約数列:

[1, 2, 4, 8, 16, 409, 491, 818, 982, 1636, 1964, 3272, 3928, 6277, 6544, 7856, 12554, 25108, 50216, 100432, 200819, 401638, 803276, 1606552, 2567293, 3082007, 3213104, 5134586, 6164014, 10269172, 12328028, 20538344, 24656056, 41076688, 49312112, 1260540863, 2521081726, 5042163452, 10084326904, 20168653808]

約数ペア:

[(1, 20168653808), (2, 10084326904), (4, 5042163452), (8, 2521081726), (16, 1260540863), (409, 49312112), (491, 41076688), (818, 24656056), (982, 20538344), (1636, 12328028), (1964, 10269172), (3272, 6164014), (3928, 5134586), (6277, 3213104), (6544, 3082007), (7856, 2567293), (12554, 1606552), (25108, 803276), (50216, 401638), (100432, 200819)]