128819080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247729}}^1$

素因数の和:247753

約数の個数: 32

約数和(自身を含む): 312139800

約数和(自身を除く): 183320720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 247729, 495458, 990916, 1238645, 1981832, 2477290, 3220477, 4954580, 6440954, 9909160, 12881908, 16102385, 25763816, 32204770, 64409540, 128819080]

約数ペア:

[(1, 128819080), (2, 64409540), (4, 32204770), (5, 25763816), (8, 16102385), (10, 12881908), (13, 9909160), (20, 6440954), (26, 4954580), (40, 3220477), (52, 2477290), (65, 1981832), (104, 1238645), (130, 990916), (260, 495458), (520, 247729)]