649804220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2499247}}^1$

素因数の和:2499269

約数の個数: 24

約数和(自身を含む): 1469557824

約数和(自身を除く): 819753604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2499247, 4998494, 9996988, 12496235, 24992470, 32490211, 49984940, 64980422, 129960844, 162451055, 324902110, 649804220]

約数ペア:

[(1, 649804220), (2, 324902110), (4, 162451055), (5, 129960844), (10, 64980422), (13, 49984940), (20, 32490211), (26, 24992470), (52, 12496235), (65, 9996988), (130, 4998494), (260, 2499247)]