18780424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2029}}^1$

素因数の和:2137

約数の個数: 32

約数和(自身を含む): 38367000

約数和(自身を除く): 19586576

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2029, 2314, 4058, 4628, 8116, 9256, 16232, 26377, 52754, 105508, 180581, 211016, 361162, 722324, 1444648, 2347553, 4695106, 9390212, 18780424]

約数ペア:

[(1, 18780424), (2, 9390212), (4, 4695106), (8, 2347553), (13, 1444648), (26, 722324), (52, 361162), (89, 211016), (104, 180581), (178, 105508), (356, 52754), (712, 26377), (1157, 16232), (2029, 9256), (2314, 8116), (4058, 4628)]