21990668

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{34147}}^1$

素因数の和:34181

約数の個数: 24

約数和(自身を含む): 45894912

約数和(自身を除く): 23904244

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 34147, 68294, 136588, 239029, 478058, 785381, 956116, 1570762, 3141524, 5497667, 10995334, 21990668]

約数ペア:

[(1, 21990668), (2, 10995334), (4, 5497667), (7, 3141524), (14, 1570762), (23, 956116), (28, 785381), (46, 478058), (92, 239029), (161, 136588), (322, 68294), (644, 34147)]