18919688720

素因数分解:

$2^4\times 5^1\times {\mathrm{593}}^1\times {\mathrm{398813}}^1$

素因数の和:399419

約数の個数: 40

約数和(自身を含む): 44062565976

約数和(自身を除く): 25142877256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 593, 1186, 2372, 2965, 4744, 5930, 9488, 11860, 23720, 47440, 398813, 797626, 1595252, 1994065, 3190504, 3988130, 6381008, 7976260, 15952520, 31905040, 236496109, 472992218, 945984436, 1182480545, 1891968872, 2364961090, 3783937744, 4729922180, 9459844360, 18919688720]

約数ペア:

[(1, 18919688720), (2, 9459844360), (4, 4729922180), (5, 3783937744), (8, 2364961090), (10, 1891968872), (16, 1182480545), (20, 945984436), (40, 472992218), (80, 236496109), (593, 31905040), (1186, 15952520), (2372, 7976260), (2965, 6381008), (4744, 3988130), (5930, 3190504), (9488, 1994065), (11860, 1595252), (23720, 797626), (47440, 398813)]