28988986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:370

約数の個数: 32

約数和(自身を含む): 48399120

約数和(自身を除く): 19410134

約数列:

[1, 2, 13, 26, 53, 106, 109, 193, 218, 386, 689, 1378, 1417, 2509, 2834, 5018, 5777, 10229, 11554, 20458, 21037, 42074, 75101, 132977, 150202, 265954, 273481, 546962, 1114961, 2229922, 14494493, 28988986]

約数ペア:

[(1, 28988986), (2, 14494493), (13, 2229922), (26, 1114961), (53, 546962), (106, 273481), (109, 265954), (193, 150202), (218, 132977), (386, 75101), (689, 42074), (1378, 21037), (1417, 20458), (2509, 11554), (2834, 10229), (5018, 5777)]