21423356

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{877}}^1$

素因数の和:1109

約数の個数: 24

約数和(自身を含む): 38941056

約数和(自身を除く): 17517700

約数列:

[1, 2, 4, 31, 62, 124, 197, 394, 788, 877, 1754, 3508, 6107, 12214, 24428, 27187, 54374, 108748, 172769, 345538, 691076, 5355839, 10711678, 21423356]

約数ペア:

[(1, 21423356), (2, 10711678), (4, 5355839), (31, 691076), (62, 345538), (124, 172769), (197, 108748), (394, 54374), (788, 27187), (877, 24428), (1754, 12214), (3508, 6107)]