28263963

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5449}}^1$

素因数の和:5491

約数の個数: 32

約数和(自身を含む): 48832000

約数和(自身を除く): 20568037

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 5449, 16347, 38143, 70837, 103531, 114429, 212511, 310593, 495859, 724717, 1345903, 1487577, 2174151, 4037709, 9421321, 28263963]

約数ペア:

[(1, 28263963), (3, 9421321), (7, 4037709), (13, 2174151), (19, 1487577), (21, 1345903), (39, 724717), (57, 495859), (91, 310593), (133, 212511), (247, 114429), (273, 103531), (399, 70837), (741, 38143), (1729, 16347), (5187, 5449)]