21808204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5569}}^1$

素因数の和:5673

約数の個数: 24

約数和(自身を含む): 42109200

約数和(自身を除く): 20300996

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5569, 11138, 22276, 61259, 122518, 245036, 495641, 991282, 1982564, 5452051, 10904102, 21808204]

約数ペア:

[(1, 21808204), (2, 10904102), (4, 5452051), (11, 1982564), (22, 991282), (44, 495641), (89, 245036), (178, 122518), (356, 61259), (979, 22276), (1958, 11138), (3916, 5569)]