18780388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{1223}}^1$

素因数の和:1587

約数の個数: 24

約数和(自身を含む): 35985600

約数和(自身を除く): 17205212

約数列:

[1, 2, 4, 11, 22, 44, 349, 698, 1223, 1396, 2446, 3839, 4892, 7678, 13453, 15356, 26906, 53812, 426827, 853654, 1707308, 4695097, 9390194, 18780388]

約数ペア:

[(1, 18780388), (2, 9390194), (4, 4695097), (11, 1707308), (22, 853654), (44, 426827), (349, 53812), (698, 26906), (1223, 15356), (1396, 13453), (2446, 7678), (3839, 4892)]