21803716

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2371}}^1$

素因数の和:2416

約数の個数: 36

約数和(自身を含む): 44166640

約数和(自身を除く): 22362924

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2299, 2371, 4598, 4742, 9196, 9484, 26081, 45049, 52162, 90098, 104324, 180196, 286891, 495539, 573782, 991078, 1147564, 1982156, 5450929, 10901858, 21803716]

約数ペア:

[(1, 21803716), (2, 10901858), (4, 5450929), (11, 1982156), (19, 1147564), (22, 991078), (38, 573782), (44, 495539), (76, 286891), (121, 180196), (209, 104324), (242, 90098), (418, 52162), (484, 45049), (836, 26081), (2299, 9484), (2371, 9196), (4598, 4742)]