19968679915

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{36097}}^1$

素因数の和:36259

約数の個数: 32

約数和(自身を含む): 25616295936

約数和(自身を除く): 5647616021

約数列:

[1, 5, 31, 43, 83, 155, 215, 415, 1333, 2573, 3569, 6665, 12865, 17845, 36097, 110639, 180485, 553195, 1119007, 1552171, 2996051, 5595035, 7760855, 14980255, 48117301, 92877581, 128830193, 240586505, 464387905, 644150965, 3993735983, 19968679915]

約数ペア:

[(1, 19968679915), (5, 3993735983), (31, 644150965), (43, 464387905), (83, 240586505), (155, 128830193), (215, 92877581), (415, 48117301), (1333, 14980255), (2573, 7760855), (3569, 5595035), (6665, 2996051), (12865, 1552171), (17845, 1119007), (36097, 553195), (110639, 180485)]