19406420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88211}}^1$

素因数の和:88231

約数の個数: 24

約数和(自身を含む): 44458848

約数和(自身を除く): 25052428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88211, 176422, 352844, 441055, 882110, 970321, 1764220, 1940642, 3881284, 4851605, 9703210, 19406420]

約数ペア:

[(1, 19406420), (2, 9703210), (4, 4851605), (5, 3881284), (10, 1940642), (11, 1764220), (20, 970321), (22, 882110), (44, 441055), (55, 352844), (110, 176422), (220, 88211)]