639826

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:369

約数の個数: 16

約数和(自身を含む): 1059840

約数和(自身を除く): 420014

約数列:

[1, 2, 11, 22, 127, 229, 254, 458, 1397, 2519, 2794, 5038, 29083, 58166, 319913, 639826]

約数ペア:

[(1, 639826), (2, 319913), (11, 58166), (22, 29083), (127, 5038), (229, 2794), (254, 2519), (458, 1397)]