128399080

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{11933}}^1$

素因数の和:12213

約数の個数: 32

約数和(自身を含む): 289996200

約数和(自身を除く): 161597120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 10760, 11933, 23866, 47732, 59665, 95464, 119330, 238660, 477320, 3209977, 6419954, 12839908, 16049885, 25679816, 32099770, 64199540, 128399080]

約数ペア:

[(1, 128399080), (2, 64199540), (4, 32099770), (5, 25679816), (8, 16049885), (10, 12839908), (20, 6419954), (40, 3209977), (269, 477320), (538, 238660), (1076, 119330), (1345, 95464), (2152, 59665), (2690, 47732), (5380, 23866), (10760, 11933)]