28109820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1087}}^1$

素因数の和:1530

約数の個数: 48

約数和(自身を含む): 78962688

約数和(自身を除く): 50852868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 431, 862, 1087, 1293, 1724, 2155, 2174, 2586, 3261, 4310, 4348, 5172, 5435, 6465, 6522, 8620, 10870, 12930, 13044, 16305, 21740, 25860, 32610, 65220, 468497, 936994, 1405491, 1873988, 2342485, 2810982, 4684970, 5621964, 7027455, 9369940, 14054910, 28109820]

約数ペア:

[(1, 28109820), (2, 14054910), (3, 9369940), (4, 7027455), (5, 5621964), (6, 4684970), (10, 2810982), (12, 2342485), (15, 1873988), (20, 1405491), (30, 936994), (60, 468497), (431, 65220), (862, 32610), (1087, 25860), (1293, 21740), (1724, 16305), (2155, 13044), (2174, 12930), (2586, 10870), (3261, 8620), (4310, 6522), (4348, 6465), (5172, 5435)]