20165882680

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1916909}}^1$

素因数の和:1917183

約数の個数: 32

約数和(自身を含む): 45545781600

約数和(自身を除く): 25379898920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 1916909, 3833818, 7667636, 9584545, 15335272, 19169090, 38338180, 76676360, 504147067, 1008294134, 2016588268, 2520735335, 4033176536, 5041470670, 10082941340, 20165882680]

約数ペア:

[(1, 20165882680), (2, 10082941340), (4, 5041470670), (5, 4033176536), (8, 2520735335), (10, 2016588268), (20, 1008294134), (40, 504147067), (263, 76676360), (526, 38338180), (1052, 19169090), (1315, 15335272), (2104, 9584545), (2630, 7667636), (5260, 3833818), (10520, 1916909)]