20405858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:350

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 14154142

約数列:

[1, 2, 11, 22, 59, 79, 118, 158, 199, 398, 649, 869, 1298, 1738, 2189, 4378, 4661, 9322, 11741, 15721, 23482, 31442, 51271, 102542, 129151, 172931, 258302, 345862, 927539, 1855078, 10202929, 20405858]

約数ペア:

[(1, 20405858), (2, 10202929), (11, 1855078), (22, 927539), (59, 345862), (79, 258302), (118, 172931), (158, 129151), (199, 102542), (398, 51271), (649, 31442), (869, 23482), (1298, 15721), (1738, 11741), (2189, 9322), (4378, 4661)]