27780220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8219}}^1$

素因数の和:8254

約数の個数: 36

約数和(自身を含む): 63178920

約数和(自身を除く): 35398700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 8219, 16438, 32876, 41095, 82190, 106847, 164380, 213694, 427388, 534235, 1068470, 1389011, 2136940, 2778022, 5556044, 6945055, 13890110, 27780220]

約数ペア:

[(1, 27780220), (2, 13890110), (4, 6945055), (5, 5556044), (10, 2778022), (13, 2136940), (20, 1389011), (26, 1068470), (52, 534235), (65, 427388), (130, 213694), (169, 164380), (260, 106847), (338, 82190), (676, 41095), (845, 32876), (1690, 16438), (3380, 8219)]