21964855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21019}}^1$

素因数の和:21054

約数の個数: 16

約数和(自身を含む): 30268800

約数和(自身を除く): 8303945

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 21019, 105095, 231209, 399361, 1156045, 1996805, 4392971, 21964855]

約数ペア:

[(1, 21964855), (5, 4392971), (11, 1996805), (19, 1156045), (55, 399361), (95, 231209), (209, 105095), (1045, 21019)]