28390360

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1097}}^1$

素因数の和:1755

約数の個数: 32

約数和(自身を含む): 64035360

約数和(自身を除く): 35645000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1097, 1294, 2194, 2588, 3235, 4388, 5176, 5485, 6470, 8776, 10970, 12940, 21940, 25880, 43880, 709759, 1419518, 2839036, 3548795, 5678072, 7097590, 14195180, 28390360]

約数ペア:

[(1, 28390360), (2, 14195180), (4, 7097590), (5, 5678072), (8, 3548795), (10, 2839036), (20, 1419518), (40, 709759), (647, 43880), (1097, 25880), (1294, 21940), (2194, 12940), (2588, 10970), (3235, 8776), (4388, 6470), (5176, 5485)]