20183974640

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{811253}}^1$

素因数の和:811577

約数の個数: 40

約数和(自身を含む): 47078692128

約数和(自身を除く): 26894717488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 3110, 4976, 6220, 12440, 24880, 811253, 1622506, 3245012, 4056265, 6490024, 8112530, 12980048, 16225060, 32450120, 64900240, 252299683, 504599366, 1009198732, 1261498415, 2018397464, 2522996830, 4036794928, 5045993660, 10091987320, 20183974640]

約数ペア:

[(1, 20183974640), (2, 10091987320), (4, 5045993660), (5, 4036794928), (8, 2522996830), (10, 2018397464), (16, 1261498415), (20, 1009198732), (40, 504599366), (80, 252299683), (311, 64900240), (622, 32450120), (1244, 16225060), (1555, 12980048), (2488, 8112530), (3110, 6490024), (4976, 4056265), (6220, 3245012), (12440, 1622506), (24880, 811253)]