28781805

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1433}}^1$

素因数の和:1557

約数の個数: 32

約数和(自身を含む): 50109696

約数和(自身を除く): 21327891

約数列:

[1, 3, 5, 13, 15, 39, 65, 103, 195, 309, 515, 1339, 1433, 1545, 4017, 4299, 6695, 7165, 18629, 20085, 21495, 55887, 93145, 147599, 279435, 442797, 737995, 1918787, 2213985, 5756361, 9593935, 28781805]

約数ペア:

[(1, 28781805), (3, 9593935), (5, 5756361), (13, 2213985), (15, 1918787), (39, 737995), (65, 442797), (103, 279435), (195, 147599), (309, 93145), (515, 55887), (1339, 21495), (1433, 20085), (1545, 18629), (4017, 7165), (4299, 6695)]