18980440

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5717}}^1$

素因数の和:5811

約数の個数: 32

約数和(自身を含む): 43228080

約数和(自身を除く): 24247640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 5717, 11434, 22868, 28585, 45736, 57170, 114340, 228680, 474511, 949022, 1898044, 2372555, 3796088, 4745110, 9490220, 18980440]

約数ペア:

[(1, 18980440), (2, 9490220), (4, 4745110), (5, 3796088), (8, 2372555), (10, 1898044), (20, 949022), (40, 474511), (83, 228680), (166, 114340), (332, 57170), (415, 45736), (664, 28585), (830, 22868), (1660, 11434), (3320, 5717)]