20121380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52951}}^1$

素因数の和:52979

約数の個数: 24

約数和(自身を含む): 44479680

約数和(自身を除く): 24358300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 52951, 105902, 211804, 264755, 529510, 1006069, 1059020, 2012138, 4024276, 5030345, 10060690, 20121380]

約数ペア:

[(1, 20121380), (2, 10060690), (4, 5030345), (5, 4024276), (10, 2012138), (19, 1059020), (20, 1006069), (38, 529510), (76, 264755), (95, 211804), (190, 105902), (380, 52951)]