21211258

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{4261}}^1$

素因数の和:4413

約数の個数: 16

約数和(自身を含む): 33755040

約数和(自身を除く): 12543782

約数列:

[1, 2, 19, 38, 131, 262, 2489, 4261, 4978, 8522, 80959, 161918, 558191, 1116382, 10605629, 21211258]

約数ペア:

[(1, 21211258), (2, 10605629), (19, 1116382), (38, 558191), (131, 161918), (262, 80959), (2489, 8522), (4261, 4978)]