20199887216

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{397}}^1\times {\mathrm{77563}}^1$

素因数の和:78009

約数の個数: 40

約数和(自身を含む): 40193354544

約数和(自身を除く): 19993467328

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 397, 656, 794, 1588, 3176, 6352, 16277, 32554, 65108, 77563, 130216, 155126, 260432, 310252, 620504, 1241008, 3180083, 6360166, 12720332, 25440664, 30792511, 50881328, 61585022, 123170044, 246340088, 492680176, 1262492951, 2524985902, 5049971804, 10099943608, 20199887216]

約数ペア:

[(1, 20199887216), (2, 10099943608), (4, 5049971804), (8, 2524985902), (16, 1262492951), (41, 492680176), (82, 246340088), (164, 123170044), (328, 61585022), (397, 50881328), (656, 30792511), (794, 25440664), (1588, 12720332), (3176, 6360166), (6352, 3180083), (16277, 1241008), (32554, 620504), (65108, 310252), (77563, 260432), (130216, 155126)]