19605520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22279}}^1$

素因数の和:22303

約数の個数: 40

約数和(自身を含む): 49728960

約数和(自身を除く): 30123440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22279, 44558, 89116, 111395, 178232, 222790, 245069, 356464, 445580, 490138, 891160, 980276, 1225345, 1782320, 1960552, 2450690, 3921104, 4901380, 9802760, 19605520]

約数ペア:

[(1, 19605520), (2, 9802760), (4, 4901380), (5, 3921104), (8, 2450690), (10, 1960552), (11, 1782320), (16, 1225345), (20, 980276), (22, 891160), (40, 490138), (44, 445580), (55, 356464), (80, 245069), (88, 222790), (110, 178232), (176, 111395), (220, 89116), (440, 44558), (880, 22279)]