19572740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2069}}^1$

素因数の和:2132

約数の個数: 48

約数和(自身を含む): 45904320

約数和(自身を除く): 26331580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2069, 2365, 4138, 4730, 8276, 9460, 10345, 20690, 22759, 41380, 45518, 88967, 91036, 113795, 177934, 227590, 355868, 444835, 455180, 889670, 978637, 1779340, 1957274, 3914548, 4893185, 9786370, 19572740]

約数ペア:

[(1, 19572740), (2, 9786370), (4, 4893185), (5, 3914548), (10, 1957274), (11, 1779340), (20, 978637), (22, 889670), (43, 455180), (44, 444835), (55, 355868), (86, 227590), (110, 177934), (172, 113795), (215, 91036), (220, 88967), (430, 45518), (473, 41380), (860, 22759), (946, 20690), (1892, 10345), (2069, 9460), (2365, 8276), (4138, 4730)]